When using `rlang`, the `last_error()` function can be called to display a backtrace. This function helps with debugging code and understanding errors that may occur within the code. When a function throws an error in R, the interpreter immediately stops and returns an error message.
This can be frustrating, especially when the error message is difficult to understand and doesn't clearly explain what went wrong. `last_error()` function provides a detailed traceback of the error that occurred, making it easier to understand what went wrong. Here's an example of how to use `last_error()` in R:```
library(rlang)
f <- function(x) {
if (is.numeric(x)) {
return(x * 2)
} else {
stop("Invalid argument type.")
}
}
f("hello") # triggers an error
last_error() # displays a traceback
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(ANYONE GOOD AT PYTHON!?)
Write a program that outputs some Leaderboard. Pick something that interests you.
You must have a minimum of 3 rows of data and 2 columns (name can be one).
I created 6 variables called player_1, player_2 and player_3, points_1, points_2 and points_3. Be sure to use meaningful names. I centered the names and right-justified the total points. You may format your data to your liking, but the output must be in clean rows and columns.
Answer:
# Python Recap
def main():
runTimeInMinutes = 95
movieTitle = "Daddy Day Care"
print(movieTitle)
movieTitle = "Hotel for Dogs"
print(movieTitle)
print(runTimeInMinutes)
main()
Explanation:
Why do you think design is so important to humans?
How did tribes profit most from cattle drives that passed through their land?
A.
by successfully collecting taxes from every drover who used their lands
B.
by buying cattle from ranchers to keep for themselves
C.
by selling cattle that would be taken to Texas ranches
D.
by leasing grazing land to ranchers and drovers from Texas
The way that the tribes profit most from cattle drives that passed through their land is option D. By leasing grazing land to ranchers and drovers from Texas.
How did Native Americans gain from the long cattle drives?When Oklahoma became a state in 1907, the reservation system there was essentially abolished. In Indian Territory, cattle were and are the dominant economic driver.
Tolls on moving livestock, exporting their own animals, and leasing their territory for grazing were all sources of income for the tribes.
There were several cattle drives between 1867 and 1893. Cattle drives were conducted to supply the demand for beef in the east and to provide the cattlemen with a means of livelihood after the Civil War when the great cities in the northeast lacked livestock.
Lastly, Abolishing Cattle Drives: Soon after the Civil War, it began, and after the railroads reached Texas, it came to an end.
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A local park is interested in building a bridge over a short ravine. They have stressed that keeping costs low is very important to them. What type of bridge would you recommend they build?
Based on the requirement of low cost, I would recommend the park to build a simple beam bridge or a suspension bridge.
Why to build beam bridge or suspension bridge?
These types of bridges are relatively easy and inexpensive to construct compared to other types of bridges, such as arch bridges or cable-stayed bridges. However, the specific type of bridge would depend on the specific conditions and requirements of the location, such as the width and depth of the ravine, the load capacity required, and local building codes and regulations.
I recommend a beam or suspension bridge for cost-effectiveness. These are simple to build and suitable for short ravines. The specific type depends on site conditions and requirements.
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refers to the increasing accessibility of technology, allowing more people to access information, create content, and develop applications.refers to the increasing accessibility of technology, allowing more people to access information, create content, and develop applications.
Answer:
Democratization of technology
Explanation:
Democratization of technology refers to the increasing accessibility of technology. More people have better access to the tools needed to view content and create technology solutions of their own.
Answer:
democratization of technology: the increasing accessibility of technology, allowing more people to access and create content and applications
Explanation:
- Edge 2022
The best way to handle a problem is to ______.
a.
wait for someone to notice the problem
b.
avoid the problem so you don’t get blamed
c.
take care of the problem as soon as someone asks you
d.
take care of the problem as soon as you notice it
Answer:
D. take care of the problem ad soon as you notice it
in ____ orientation, a page is taller than it is wide.
Answer:
portrait
Explanation:
!WILL GIVE BRAINLIEST!
Write a Python program that prompts the user for a word. If the word comes between the words apple
and pear alphabetically, print a message that tells the user that the word is valid, otherwise, tell
the user the word is out of range.
Answer:
word = input()
if word > "apple" and word < "pear":
print("Word is valid.")
else:
print("Word is out of range.")
As part of a summer internship at UMD you are working on improving the ELMS website. You want to see if the new ELMS website with your modifications is effective. To do so, you track student engagement with a score that can range from 0 to 100 for a group 32 students who have agreed to participate in your study. You want to control for order by having half of the students interact with the old ELMS website first and then with the new one; the other half students do it in reverse order. You want to determine if engagement scores differ between the old and new ELMS website. Which of the following would you use as the appropriate hypothesis test? a. paired t-test b. chi-squared test c. two sample t-test d. two sample z-test ewe haven't covered the appropriate method for this test yet
The appropriate hypothesis test for determining if engagement scores differ between the old and new ELMS website is the paired t-test.
Which hypothesis test is suitable for comparing engagement scores between the old and new ELMS website?The appropriate hypothesis test in this scenario is the paired t-test. The study aims to compare the engagement scores of a group of 32 students who interact with both the old and new ELMS website, with half of them starting with the old website and the other half starting with the new website.
The paired t-test is suitable when analyzing dependent samples, where each participant is measured under two different conditions or treatments. In this case, the students' engagement scores are paired because they are measured before and after interacting with different versions of the ELMS website.
By using the paired t-test, the researchers can assess whether there is a significant difference in engagement scores within each participant, taking into account the order in which they interacted with the websites. This test allows for controlling the potential variability between individuals, as each participant serves as their own control.
Hypothesis testing, specifically the paired t-test, which is commonly used in research studies involving dependent samples. Understanding the appropriate statistical tests helps in drawing accurate conclusions and making informed decisions based on the data.
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what are the three elements of protecting information
1. Confidentiality- preventing unauthorized access.
2. Integrity- maintaining accuracy and completeness.
3. Availability- ensuring access to authorized users.
Authorized users are individuals who have been granted permission to access a system, network, or application. This usually involves the assignment of a user ID and password, or another type of authentication. Authorized users are typically employees, contractors, partners, or customers of an organization, who have a legitimate need to access the system or application. Access is typically granted on a need-to-know basis, and users are typically monitored to ensure they are using the system or application appropriately.
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juanita opens her software application and gets a message stating that she has only 16 more uses of the product available. given this scenario, what is her best course of action to use it more than 16 additional times?
Juanita's best course of action would be to contact the software provider and purchase additional uses of the product.
What is software?
Software is a collection of computer programmes, documentation, and data. This is in contrast to hardware, which is the foundation of the system and does the real work. Executable code is made up of machine language instructions that are supported by an individual processor, often a central processing unit (CPU) or a graphics processing unit (GPU). Machine language is made up of sets of binary values that represent processor instructions that change the computer's state from its previous one.
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True or false
The process of converting source code into object is called compilation
The compiler converts program written in high level language into machine language at a time
Answer:
a.true
b.true
Explanation:
Hope it will helps you
me mark me as brinliest
Answer:
True
Explanation:
true trur true true
what is copyrights used for
if something belongs to someone it makes it so someone else cannot steal it and claim it to be their own
Can you conclude a car is not accelerating if its speedometer indicates a steady 55 mph?
No, the speedometer reading of a steady 55 mph does not necessarily indicate that a car is not accelerating.
What is acceleration?Acceleration is the rate of change of velocity, and velocity is the combination of speed and direction.
The speedometer only measures the speed of the car, not its acceleration. It is possible for a car to be accelerating while maintaining a steady speed if the acceleration is counteracted by other forces such as friction or air resistance. To determine if a car is accelerating, additional information such as changes in speed over time or other sensor readings would be needed.
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What is the binary code for 101?
Answer:
1100101
Explanation:
Answer:
The binary code for "101" is 1100101
How to unblock your Wi-fi if it is blocked by your administrator .
Answer:
you dont
Explanation:
you ask the admin to unblock it. if you dont know who did it, you had your ip grabbed and you cant do anything but call the police.
which of the following regarding a data flow diagram is correct? a process must have both an input and output data flow. a data store must be connected to at least one process. external entities should not be connected to one another. all of the above
All of the above is correct regarding data flow diagrams.
A data flow diagram (DFD) is a graphical representation of the "flow" of data through a system. It illustrates the process of data transformation from one form to another. A process must have both an input and output data flow. This means that any process in a data flow diagram must be connected to at least one input and one output data flow. This ensures that data is received, transformed, and passed on to the next step in the system.
A data store must be connected to at least one process. A data store is used to store data between processes and to accumulate and retain data. It must therefore be connected to a process that reads or writes data to it. External entities should not be connected to one another. External entities are used to represent the external sources or destinations of data, such as people or other systems. Therefore, they should not be connected to one another. In conclusion, all of the above is correct regarding data flow diagrams.
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How do we “read” and “write” in MAR and MDR memory unit, please help I am very confused :)
Answer:
No entiendo
Por favor traduce al español
Which behavior was most likely inherited rather than learned?
It was most likely behavior. thxxx
Answer: a camel seeking shelter from the sun.
Explanation: The other option a student writing his name on a piece of paper is learned a dog begging for food at a dinner table is learned a chimpanzee using a stick as a digging tool is learned
Which of the following is not a good file-management practice?
A. Create descriptive names for folders and files.
B. Store all of the data files at the top level of the drive to make them easier to find.
C. Remove folders and files when they are no longer needed.
D. Make enough subfolders so that the files in any one folder are readably visible.
Answer:
B, Store all of the data files at the top level of the drive to make them easier to find.
Explanation:
Your files will be unorganized, and it will actually do the opposite of what you want it to.
Hope this helps!
The following is not a good file-management practice Store all of the data files at the top level of the drive to make them easier to find. Thus the correct option is B.
What is file management?File management is referred to as a systematic technique that allows an individual to store their valuable data and information in the forms of files and documents in an organised manner to retrieve it properly.
File management is crucial since it keeps the files of an individual orderly. It could make it simpler for them to locate files when they need to utilize them. It is crucial for organizations since it makes it simpler for them to share folders with their staff or customers.
File management allows an individual to store their information with descriptive names for easy access and remove files that are not required.
It also enables to make of subfolders so that the files belonging to separate departments or folders are visible to the reader without creating any kiosk.
Therefore, option B is appropriate.
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It is the way to convey a message,an idea,a picture,or speech that is received and understood clearly and correctly by the person for whom it is sent.
Answer:
Communication.
Explanation:
Communication can be defined as a process which typically involves the transfer of information from one person (sender) to another (recipient), through the use of semiotics, symbols and signs that are mutually understood by both parties.
In this context, communication is the way to convey a message, an idea, a picture, or speech that is received and understood clearly and correctly by the person for whom it is sent.
Generally, the linear model of communication comprises of four (4) main components and these are;
1. Sender (S): this is typically the source of information (message) or the originator of a message that is being sent to a receiver. Thus, they are simply the producer of a message.
2. Channel (C): this is the medium used by the sender for the dissemination or transmission of the message to the recipient. For example, telephone, television, radio, newspapers, billboards etc.
3. Message (M): this is the information or data that is being sent to a recipient by a sender. It could be in the form of a video, audio, text message etc.
4. Receiver (R): this is typically the destination of information (message) or the recipient of a message that is being sent from a sender.
Write: In paragraph 137, why does Norma use "us" over and over again?
In paragraph 137 of Button, Button by Richard Matheson, Norma used 'us' over and over again because she wanted to stress the fact that her request was not born out of selfishness.
Why did Norma use the word, 'us' repeatedly?After the conversation that Norma had with Arthur the night before, she could not help but believe that Arthur considered her to be a selfish person.
In her quest to prove that her request was not just for her but also for Arthur, she used the word 'us' over and over again. This was meant to demonstrate the fact that her intention was selfless and she was working for the good of two of them.
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the computer stores currently used programs and data in ________.
The computer stores all the currently used programs and data in the RAM of the computer. RAM stands for Random-Access Memory. It has all the temporary memory.
What is RAM?
RAM stands for Random Access Memory. It is a fundamental element of computing. RAM is a temporary memory bank of computer where the computer stores all the data it needs to retrieve quickly.
The core of the computer has the central processing unit or CPU which is the source of control that runs all the programs and instructions in the system. In order to function properly, the computer system uses two types of memory which are primary and secondary. The main storage is the primary memory which has all the important data whereas the currently used data and programs are stored in the secondary memory of the computer system.
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2. nat helps to preserve ipv4 address space. true or false?
The statement " NAT helps to preserve ipv4 address space" is True. NAT stands for Network Address Translation, it helps to mitigate the scarcity of IPv4 addresses and enables more efficient utilization of the available address space.
IPv4 (Internet Protocol version 4) has a limited number of available addresses due to its 32-bit addressing scheme, which allows for approximately 4.3 billion unique addresses.
With the increasing number of devices connecting to the internet, the demand for IP addresses has surpassed the available supply.
NAT is a technique used to conserve IPv4 address space by allowing multiple devices within a private network to share a single public IP address. It achieves this by translating the private IP addresses of the devices into a single public IP address when communicating with external networks.
This allows multiple devices to access the internet using a single public IP address.Therefore the given statement is True.
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in this project, you are going to design and (partially) implement a secure communication system between two parties
To design and partially implement a secure communication system between two parties, you will need to incorporate several essential elements. Those are Authentication, Encryption, Integrity,
Authentication: Before communication begins, there must be a mutual agreement between both parties about who they are. This is accomplished by authentication. It can be accomplished using passwords, digital certificates, or biometric data. The authentication process ensures that the recipient is authorized to receive the information.
Encryption: To ensure that the message is unreadable to third parties, encryption is used. An encryption algorithm transforms the message into a code that can only be decrypted by the receiver. This makes the message useless if intercepted by unauthorized persons.
Integrity: It ensures that the message has not been tampered with during transmission. An integrity algorithm detects any changes to the message made during transmission and notifies the recipient. This ensures that the recipient receives the original message from the sender.
Non-repudiation: It ensures that the sender cannot deny sending the message, which is essential in legal disputes. By digitally signing the message, the recipient can verify that the message originated from the sender while also ensuring the message's integrity.
Secure communication protocols: Secure communication protocols, such as Secure Sockets Layer (SSL) and Transport Layer Security (TLS), can be used to establish secure communication. They incorporate all of the preceding elements to create a secure environment for communication. Therefore, incorporating these elements will help you design and partially implement a secure communication system between two parties.
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write a program to check the greatest number among 4 numbers
Answer:
Explanation:
We can use conditional statements in any programming language to write a program to check the greatest number among 4 numbers. Here is an example program in Python:
```
num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))
num3 = int(input("Enter third number: "))
num4 = int(input("Enter fourth number: "))
if num1 > num2 and num1 > num3 and num1 > num4:
print("The greatest number is", num1)
elif num2 > num3 and num2 > num4:
print("The greatest number is", num2)
elif num3 > num4:
print("The greatest number is", num3)
else:
print("The greatest number is", num4)
```
In this program, we take input from the user for four numbers using the `input()` function and convert them into integers using the `int()` function. Then, we use conditional statements (`if`, `elif`, and `else`) to compare the numbers and find the greatest among them. The `print()` function is used to display the result.
1. Python documentation (https://docs.python.org/)
2. GeeksforGeeks (https://www.geeksforgeeks.org/)
3. W3Schools (https://www.w3schools.com/)
Mackenzie's attentive, responsive, emotionally sensitive behavior toward her infant promotes which type of attachment?
Mackenzie's attentive, responsive, emotionally sensitive behavior toward her infant is likely to promote a secure attachment style.
Secure attachment is a healthy and positive type of attachment style that develops when a caregiver is consistently responsive and attuned to the needs of their child. A securely attached child feels safe and comfortable exploring their environment because they know they can rely on their caregiver to provide support and comfort when needed.
When a caregiver like Mackenzie responds quickly and consistently to her infant's needs, she is helping to establish a strong and secure attachment between herself and her child. By demonstrating emotional sensitivity and attunement, Mackenzie is able to understand and respond appropriately to her infant's emotional cues, which helps to build trust and a sense of security for the child.
Securely attached children tend to be more resilient and have better social and emotional outcomes later in life. They are more likely to form healthy relationships and have higher self-esteem, as well as better cognitive and academic outcomes. Therefore, Mackenzie's attentive, responsive, and emotionally sensitive behavior towards her infant is likely to promote a secure attachment style, which will have positive implications for the child's overall development and well-being.
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Mackenzie's attentive, responsive, emotionally sensitive behavior toward her infant promotes a secure attachment style.
A secure attachment style is characterized by a child's confidence in their caregiver's availability and responsiveness to their needs. When a caregiver responds consistently and sensitively to an infant's needs, the infant develops a sense of security and trust in the caregiver, which promotes the development of a secure attachment.
In contrast, inconsistent, unresponsive, or neglectful caregiving can lead to an insecure attachment style, where the child may develop behaviors such as clinginess, avoidance, or ambivalence toward the caregiver.
Therefore, Mackenzie's attentive, responsive, emotionally sensitive behavior toward her infant is likely to promote a secure attachment style, which can have positive effects on the child's emotional and social development in the long term.
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The company generates a lot of revenue and is rapidly growing. They're expecting to hire hundreds of new employees in the next year or so, and you may not be able to scale your operations at the pace you're working.
Answer:
The most appropriate way to deal with the situation presented above is to acquire more space at the current office site at additional rent beforehand.
Explanation:
The Scaling of a revenue-generating business is a crucial task in which a lot of pre-planning and thinking is required.
In order to scale the business in the next year, the planning of it is to be carried out at the moment and proper necessary arrangements are ensured. These steps could be one from:
Looking for bigger spaces for renting for a full shift of the operationsLooking for a site office for an additional officeAcquiring more space in the current office site.This process would result in acquiring a bigger place beforehand but in order to mitigate the risk, try to keep the place in view by providing them a bare minimum advance for the additional units.
how to move toolbar in outlook from side to bottom
To move toolbar in outlook from side to bottom, simply right click on any of the icons and use the Move Up, Move Down, Unpin or Pin commands from the context menu.
The toolbar, also known as a bar or standard toolbar, can be described as a row of buttons, often near the top of an application window, that controls software functions. The boxes are below the menu bar and often contain images corresponding with the function they control. A toolbar mostly provides quick access to functions that are commonly performed in the program. For instance, a formatting toolbar in Mc Excel gives you access to things like making text bold or changing text alignment with other common buttons. In an Inter net browser, toolbars add functionality that may not come pre-installed. For instance, with the G toolbar, you can access exclusive G features.
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Nonces can be used in ________. all applications client/server applications time-insensitive applications persistent applications
Nonces, or "numbers used once," can be used in all applications, including client/server applications, time-insensitive applications, and persistent applications.
Nonces are unique values that are generated for each execution of a protocol and are typically used to protect against replay attacks. In client/server applications, nonces can prevent an unauthorized replay of a request. In time-insensitive applications, they provide security irrespective of time factors. In persistent applications, nonces help maintain data integrity over long durations. Despite their type, nonces are often used in cryptographic protocols, where they ensure that old communications cannot be reused in replay attacks. They're also used in authentication protocols to ensure the freshness of each session and to prevent repetition in the encryption process.
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