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What is the exact meaning of IFS=$'\n'?
...cessary. Run new IFS in subshell to avoid overriding the default IFS:
ar=(123 321); ( IFS=$'\n'; echo ${ar[*]} )
Besides I don't really believe you recover the old IFS fully. You should double quote it to avoid line breaking such as OLDIFS="$IFS".
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How to convert a ruby hash object to JSON?
...json/ext' # to use the C based extension instead of json/pure
puts {hash: 123}.to_json
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Rails: How does the respond_to block work?
... makes it easy to export data as CSV (or any other format) from your rails site.
The js line will cause a javascript file /posts.js (or /posts.js.coffee) to be rendered/executed. I've found that to be a light-weight way to create an Ajax enabled site using jQuery UI pop-ups.
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How do I do base64 encoding on iOS?
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Awesome; so much better than random internet site! In case anyone is worried about using these scantly-documented functions, you can see the source for these on Apple's site.
– Jesse Rusak
Apr 19 '13 at 21:56
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WPF Application that only has a tray icon
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@BradLarson, the site seems to be down; but anyway the project is available as Nuget package (see Dale's answer)
– Thomas Levesque
Aug 7 '12 at 9:29
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How do Python functions handle the types of the parameters that you pass in?
Unless I'm mistaken, creating a function in Python works like this:
13 Answers
13
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Getting distance between two points based on latitude/longitude
...to the wise, this formula requires all degrees be positive. radians(abs(52.123)) should do the trick...
– Richard Dunn
Jul 4 '17 at 11:41
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Why is list initialization (using curly braces) better than the alternatives?
...teger value cannot be converted to a floating-point type.
Example:
void fun(double val, int val2) {
int x2 = val; // if val==7.9, x2 becomes 7 (bad)
char c2 = val2; // if val2==1025, c2 becomes 1 (bad)
int x3 {val}; // error: possible truncation (good)
char c3 {val2}; // error...
Why do people say that Ruby is slow? [closed]
...Ruby] is for the vast majority
of web applications Fast Enough. We
got sites doing millions of dynamic
page views per day. If you end up
being with the Yahoo or Amazon front
page, it's unlikely that an
off-the-shelve framework in ANY
language will do you much good. You'll
probably ha...
What's the point of the X-Requested-With header?
...ue is specifically discussed in section 4.3 of
Robust Defenses for Cross-Site Request Forgery. However, bypasses of
this defense using Flash were documented as early as 2008 and again as
recently as 2015 by Mathias Karlsson to exploit a CSRF flaw in Vimeo.
But, we believe that the Flash atta...