pcalc | command line util for doing hex/dec/oct/bin math | Apps library
kandi X-RAY | pcalc Summary
kandi X-RAY | pcalc Summary
There was always a loophole when it came to a need to covert between hexadecimal / decimal / octal / binary. Especially if it involved an operation like 0x1234 + 0x20. It took a lot of hard work, and mostly a good pocket calculator.
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QUESTION
EDIT 3:
So the problem may likely be in the set-up and configuration of my Lambda Layer Dependencies. I have a /bin directory containing 3 files:
- lambdazip.sh
- pdftk
- libgcj.so.10
pdftk is a pdf library, and libgcj is a dependency for PDFtk.
lambdazip.sh seems to set & modify PATH Variables.
I have tried uploading all 3 as 1 lambda layer.
I have tried uploading all 3 as 3 separate lambda layers.
I have not tried customizing the .zip file names, I know sometimes the Lambda Layer wants you to name the .zip file a specific name dependent on the language.
I have not tried customizing the "compatible architectures" & "compatible runtime" lambda layer settings.
EDIT 2:
I tried renaming the Lambda Layer as Python.zip because I heard that sometimes you need a specific naming convention for the Lambda Layer to work correctly. This also failed & produced the same error.
EDIT:
I have tried pulling the .py files out of the /surveys directory, so when they are zipped, they are in the root folder, but I still receive the same error: Runtime.ImportModuleError: Unable to import module 'lambda_function': No module named 'surveys
Which files do I need to zip? Do I need to move certain files to the root?
I learned that I had accidentally zipped the directory which commonly caused this error.
I needed to zip the contents of the directory, which is a common solution.
Unfortunately this did not work for me.
I have a Lambda Function, and the code I have uploaded is a zipped folder of my /Archive directory.
From what I understand, many of the people who run into this "[ERROR] Runtime.ImportModuleError: Unable to import module 'lambda_function':" have issues because of their Lambda Handler.
My Lambda handler is: lambda_function.lambda_handler so this doesn't appear to be my issue.
Another common problem I've noticed on Stackoverflow, appears to be with how people are compressing & zipping the files they upload to the Lambda Function.
Do I need to move my lambda_function.py? Sometimes this CloudWatch error occurs because the lambda_function.py is not in the ROOT directory.
Does my survey directory need to move?
I think the folders & directories I have here may be causing my issue.
Do I need to zip the directories individually?
Can I resolve this error by Zipping the entire project?
For more information, I also have a Lambda Layer for PDF Toolkit, called pyPDFtk in the codebase. In that Lambda layer is a zipped /bin with binaries inside.
If there is anything I can alter/change within my code or AWS configuration, please let me know, and I can return new CloudWatch error logs for you.
lambda_function.py
...ANSWER
Answered 2021-Nov-14 at 10:26I tried to replicate the issue, but it all works as expected. My setup was (Lambda with Python 3.9):
It seems to me that either your directory struct is not what you posted in the question. Similarly your real code that you present in SO could be different.
QUESTION
All the variables other than "termx" are "0", "1". "1" represents "Yes" or "Exposed" I would want to generate a table with prevalence /10,000 (Wilson's 95% CI) by the variable "termx"
...ANSWER
Answered 2021-Nov-15 at 20:27The gtsummary package can assist here. To get the rates per 10000 people, you need to provide a function to round the percentages and scale them 10,000 people. Example below!
QUESTION
I'm currently working on a research project where I need to find the correct value for $\beta$
that minimizes the function $\sum_i (p_i-\avg(n_c)_i)^2$
. Here, $\avg(n_c)_i$
is an array that is the function I'm trying to match $p_i$
to. $p_i$
depends on $\beta$
but also has some other dependencies, like $\chi^2=\sum_i p_i=N$
where $N$
is the number of particles in the system.
So essentially, I'm trying to run my code to take a starting $\beta$
value, solve for $p_i$
so it matches the summation condition, and check if $\chi^2$
is minimized. From there, I want to update $\beta$
to a new value until I get within a reasonable cutoff value.
This is where I started trying to implement the optimize function in optim.jl. I've run through a few examples and tests, but I can't seem to get it to work. The main issue is that all the functions that calculate $p_i$
rely on other variables. Specifically, my function is called pcalc(β,μ,E,cutoff)
. As you can see, I can't really cast this in a format similar to the examples in the Optim.jl documentation. I'd like to write it as pcalc(P,β)
like is in the documentation, but it's really not feasible.
Currently, I have a sort of hessian type solver, but it takes too long to run, which is why I was hoping to implement Optim.jl.
Any advice or help will be appreciated, otherwise, I'm probably going to have to write my own optimizer function.
...ANSWER
Answered 2021-Nov-06 at 16:27I have to admit I struggle a little bit with following your problem, but the gist of it seems to be that you have a function pcalc(β,μ,E,cutoff)
which you want to optimize with respect to β
, and are struggling to write this in a way that allows you to pass it to optimize
which requires a single input.
This is dealt with in the manual in the section tips and tricks: essentially you define an anonymous function or closure to optimize
, i.e. you do
QUESTION
I am working on malloc and command-line interface where I have to create and simple calculator. I have run the program successfully but I want to print my result from the main, not from the function and I am unable to run it from the main. Every time when I run it will show garbage value. What went wrong?
...ANSWER
Answered 2021-Nov-14 at 12:10SI(*pCalc );
passes the value of the structure (essentially a copy) to SI
, and void SI( Calc c)
declares SI
to have a parameter c
that is initialized to the passed value. Changes to c
in SI
affect only the parameter c
; they do not affect the structure in main
.
You can change SI(*pCalc );
to SI(pCalc);
so that it passes the address of pCalc
instead of its value, and you can change the function declaration to void SI(Calc *c)
so that its parameter c
is a pointer and is initialized to the passed address. Inside SI
, change c.
to c->
. The .
operator accesses a member of a structure, whereas the ->
operator accesses a member of a structure that is pointed to.
Alternatively, you could modify the return type of SI
so that it returns some result—either the modify structure (return type Calc
) or just the individual result (return type int
). Then you would add a return
statement into the function to return the value, and, in the main
routine, you could use x = SI(*pCalc);
to assign the returned value to x
.
QUESTION
I want to speedup the execution of a simulation. This is part of the main function:
...ANSWER
Answered 2021-Mar-21 at 10:22But i do not want to use
#pragma omp parallel num_threads(2)
You need to use #pragma omp parallel
to create the threads.
Instead of:
QUESTION
I am trying to solve a 2-sum algorithm problem for Standford university online course on coursera. I need to find all distinct pairs x+y
in a list that sum to a value t
in a range [-10000 .. 10000]
. I know there more efficient implementations but I thought it would be a good time to try and do some Haskell parallel programming.
I have tried to implement parellelisation just by looping through half of the range in two different threads (which I think are called sparks). My code is the following:
...ANSWER
Answered 2021-Feb-07 at 09:29Let's focus on this part:
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