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Is it safe to use -1 to set all bits to true?
...gn that int to the unsigned variable flags, you perform a value conversion from -2**31 (assuming a 32-bit int) to (-2**31 % 2**32) == 2**31, which is an integer with all bits but the first set to 1.
– David Stone
Dec 12 '12 at 1:53
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Splitting on first occurrence
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From the docs:
str.split([sep[, maxsplit]])
Return a list of the words in the string, using sep as the delimiter string. If maxsplit is given, at most maxsplit splits are done (thus, the list will have at most maxsplit+1 ele...
javascript check for not null
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number. the code removes "bad" values from the array (null,0 etc). Here is the code:pastebin.com/L7Z1BtuL
– TheLogicGuy
Aug 6 '16 at 18:15
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send Content-Type: application/json post with node.js
...ly this worked for me today. All other variants ended up in bad json error from API.
Besides, yet another variant for creating required POST request with JSON payload.
request.post({
uri: 'https://www.googleapis.com/urlshortener/v1/url',
headers: {'Content-Type': 'application/json'},...
Why does typeof NaN return 'number'?
...is not a peculiarity of javascript but common computer science principle.
From http://en.wikipedia.org/wiki/NaN:
There are three kinds of operation
which return NaN:
Operations with a NaN as at least one operand
Indeterminate forms
The divisions 0/0, ∞/∞, ∞/−∞, ...
jQuery append fadeIn
...need to use children() instead of filter(). The latter only removes nodes from the current query; your newly-added item isn't in that query, but is a child node instead.
$('#thumbnails')
.append('<li stle="display:none"><img src="/photos/t/'+data.filename+'"/></li>')
.chi...
Maven and adding JARs to system scope
...lly downloaded by maven
In either case, remove the <systemPath> tag from the dependency
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How to jump directly to a column number in Vim
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This is especially nice for opening Vim from other tools, as this call can be done on the command-line: "+call cursor($LINE,$COLUMN)"
– Laurence Gonsalves
Sep 27 '19 at 20:18
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What happens to git commits created in a detached HEAD state?
... state with
git reflog
Then execute, with all the commit hashes ordered from oldest to most recent:
git cherry-pick <hash1> <hash2> <hash3> ...
For example if I had only one, given in the "first 7 characters" short hash format:
git cherry-pick a21d053
This will create new...
How to detect if a specific file exists in Vimscript?
...ses the issue of having a file that does exist, but permissions prevent it from being read. If you want to detect such cases, the following will work:
:if !empty(glob("path/to/file"))
: echo "File exists."
:endif
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