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round() for float in C++
...tter, lrint to use the current rounding mode instead of round's funky away-from-zero tiebreak.
– Peter Cordes
Nov 17 '17 at 3:41
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What is the purpose of the var keyword and when should I use it (or omit it)?
...tion()
{
var wibble = 1; // Local
foo = 2; // Inherits from scope above (creating a closure)
moo = 3; // Global
}())
}
If you're not doing an assignment then you need to use var:
var x; // Declare x
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When and why I should use session_regenerate_id()?
...regenerate_id() in order to stop session hijacking and session fixation.
From this Security.SE answer:
Session hijacking refers to stealing the session cookie. This can be most easily accomplished when sharing a local network with other computers. E.g. at Starbucks. Example... a user with sess...
Trusting all certificates with okHttp
...e with current versions of OkHttp . With 3.1.1 it seems completely broken. From 3.1.2 onwards, X509TrustManager.getAcceptedIssuers() must return an empty array instead of null. For more information, see this commit (scroll down and see the notes under RealTrustRootIndex.java).
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Deleting Objects in JavaScript
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@AlexJM Yes, the next answer from Guffa (and its comments) discusses this in some detail.
– Jesse Rusak
Jun 25 '15 at 14:47
1
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Unix's 'ls' sort by name
...BK sort -V will sort by version numbers, so you get .. 2.10.2; 2.10.15; .. from man sort .. --sort=WORD will sort according to WORD: general-numeric -g, human-numeric -h, month -M, numeric -n, random -R, version -V
– mosh
Jan 21 '18 at 15:21
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How and why does 'a'['toUpperCase']() in JavaScript work?
...rCase'];
is the access via bracket notation on the property toUpperCase, from String.prototype. Since this property references a method, we can invoke it by attaching ()
'a'['toUpperCase']();
share
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Algorithm to generate all possible permutations of a list?
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Basically, for each item from left to right, all the permutations of the remaining items are generated (and each one is added with the current elements). This can be done recursively (or iteratively if you like pain) until the last item is reached at...
How to return a part of an array in Ruby?
...turns a subarray specified by range. Negative indices count
backward from the end of the array (-1 is the last element).
Returns nil if the index (or starting index) are out of range.
a = [ "a", "b", "c", "d", "e" ]
a[2] + a[0] + a[1] #=> "cab"
a[6] ...
How to correctly require a specific commit in Composer so that it would be available for dependent p
I have a library foo/foo-lib which requires a specific commit from GitHub:
3 Answers
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