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Why wasn't PyPy included in standard Python?
... when it comes to "implementation details" (behavior that is not specified by the language but is still important at a practical level).
CPython runs on more architectures than PyPy and has been successfully adapted to run in embedded architectures in ways that may be impractical for PyPy.
CPython's...
Creating a zero-filled pandas data frame
...s as an existing data frame, you can just multiply the existing data frame by zero:
df_zeros = df * 0
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How to vertically align into the center of the content of a div with defined width/height?
...an be seen in the demo. You can get it to work for every scenario manually by changing the height % of your content div and multiplying it by -.5 to get your margin-top value.
.area{
position:relative;
display:block;
height:100px;
width:100px;
border:1px solid black;
backg...
When does static class initialization happen?
...possible to force a class to initialize (if it hasn't already initialized) by using Class.forName(fqn, true, classLoader) or the short form Class.forName(fqn)
1 - The final bullet point was present in the JLS for Java 6 through Java 8, but it was apparently a mistake in the specification. It was...
What is the maximum depth of the java call stack?
...most platforms.)
If you get a stack overflow, 99% of the time it's caused by an error in the code.
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Using Vim's persistent undo?
...vim'
let &runtimepath.=','.vimDir
" Keep undo history across sessions by storing it in a file
if has('persistent_undo')
let myUndoDir = expand(vimDir . '/undodir')
" Create dirs
call system('mkdir ' . vimDir)
call system('mkdir ' . myUndoDir)
let &undodir = myUndoDir
...
What is difference between cacerts and keystore?
...different aliases'. Different from what? Your final question is answerable by experiment.
– Marquis of Lorne
Feb 6 '14 at 2:19
3
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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
...uld return you the name of the script file.
dirname is a utility provided by GNU coreutils that remove the last component from the filename. Thus if you execute your script by saying bash foo, "$( dirname "${BASH_SOURCE[0]}" )" would return .. If you said bash ../foo, it'd return ..; for bash /some...
Dealing with multiple Python versions and PIP?
...ited Sep 8 '19 at 21:23
MultiplyByZer0
3,73333 gold badges2727 silver badges4646 bronze badges
answered May 16 '16 at 10:40
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Difference between using Throwable and Exception in a try catch
...
By catching Throwable it includes things that subclass Error. You should generally not do that, except perhaps at the very highest "catch all" level of a thread where you want to log or otherwise handle absolutely everything ...