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Why are side-effects modeled as monads in Haskell?
...etContents ~~~ putStrLn
without touching the real world.
"Impurification"
Now suppose we want to make the file content uppercase as well. Uppercasing is a pure function
upperCase :: String -> String
But to make it into the real world, it has to return an IO String. It is easy to lift such a fun...
Update a dataframe in pandas while iterating row by row
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now set_value is also deprectated, and should use .at (or .iat), so my loop looks like this: for i, row in df.iterrows(): ifor_val = something if <condition>: ifor_val = something_else df.at[i,'ifor'] = ifor_...
What is the difference between quiet NaN and signaling NaN?
...ardware (TODO confirm with GDB).
What do qNaNs and sNaNs do differently?
Now that we know what qNaNs and sNaNs look like, and how to manipulate them, we are finally ready to try and make sNaNs do their thing and blow some programs up!
So without further ado:
blow_up.cpp
#include <cassert>...
Go to beginning of line without opening new line in VI
For ages now I've used SHIFT O and SHIFT $ to move to the beginning and end of a line in vi .
10 Answers
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What's a good (free) visual merge tool for Git? (on windows) [closed]
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On Windows, a good 3-way diff/merge tool remains kdiff3 (WinMerge, for now, is still 2-way based, pending WinMerge3)
See "How do you merge in GIT on Windows?" and this config.
Update 7 years later (Aug. 2018): Artur Kędzior mentions in the comments:
If you guys happen to use Visual Studio ...
Why does X[Y] join of data.tables not allow a full outer join, or a left join?
... suggestion with unique() is a great help. That ought to be in the FAQ. I know Matthew Dowle "designed it for his own use, and he wanted it that way." (FAQ 1.9), but I thought X[Y,all=T] could be an elegant way to specify a full outer join within the data.table X[Y] syntax. Or X[Y,all.x=T] for the ...
Get an object properties list in Objective-C
...ion, which is mainly taken from an Apple code sample (can't remember right now the exact source):
static const char *getPropertyType(objc_property_t property) {
const char *attributes = property_getAttributes(property);
char buffer[1 + strlen(attributes)];
strcpy(buffer, attributes);
...
Using the RUN instruction in a Dockerfile with 'source' does not work
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And now how do I downvote the original answer and upvote the edit by 'a concerned'?
– Slava
Apr 24 '19 at 10:12
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Highlight all occurrence of a selected word?
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I know than it's a really old question, but if someone is interested in this feature, can check this code
http://vim.wikia.com/wiki/Auto_highlight_current_word_when_idle
" Highlight all instances of word under cursor, when idle...
Why can't I see the “Report Data” window when creating reports?
...the toolbox, and add controls to the report, but the "Report Data" pane is nowhere to be found, so I can't fill the controls on my report. However, if I run the solution, the "Report Data" pane appears, and I can drag fields on to my report, however the Toolbox contains no controls while I'm runnin...