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Detect Retina Display
Does iOS SDK provides an easy way to check if the currentDevice has an high-resolution display (retina) ?
14 Answers
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urlencode vs rawurlencode?
...g to RFC 1738. As of PHP 5.3, however, rawurlencode follows RFC 3986 which does not require encoding tilde characters.
urlencode encodes spaces as plus signs (not as %20 as done in rawurlencode)(see http://us2.php.net/manual/en/function.urlencode.php)
Returns a string in which all non-alphanume...
Do git tags get pushed as well?
...to be public. You can use your own local tags to mark your progress, so it does not make sense to blindly push all tags in your repository to the repository you are pushing to publish your changes, whose tags are by definition public.
That's why you need to push tag explicitly, to mark tag as publ...
Truststore and Keystore Definitions
...a home]/jre/lib/security/cacerts default "truststore". The keytool utility does not make a distinction in the two terms, only in store types (i.e. - JKS vs. PKCS12). For that matter, Java does the same thing in the source code. You create a java.security.KeyStore, and use a trust manager to manage t...
How can I find the location of origin/master in git, and how do I change it?
...e is nothing special about origin, it's just a default name git uses.
Git does use origin by default when you do things like git push or git pull. So, if you have a remote you use a lot (Unfuddle, in your case), I would recommend adding unfuddle as "origin":
git remote rm origin
git remote add ori...
Why does 'git commit' not save my changes?
...ut it is worth checking you don't have a .git folder under the folder that doesn't commit.
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In the shell, what does “ 2>&1 ” mean?
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does this make any sense to you, java ... 2&1 >> data.log, I saw one of my colleague did this?
– Thang Pham
Jul 26 '11 at 19:53
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Can someone explain the “debounce” function in Javascript
... always be a timeout (because timeout is called earlier). Also, what good does clearTimeout(timeout) do, when it is declared (making it undefined) and cleared, earlier
– Startec
Jun 3 '14 at 4:23
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Why does .NET foreach loop throw NullRefException when collection is null?
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Please excuse my ignorance, but is this efficient? Does it not result in a comparison on each iteration?
– user919426
Mar 29 '16 at 10:19
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Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
...er surprises and is generally safer to use. But it is not portable - POSIX doesn't specify what it does and only some shells support it (beside bash, I heard ksh supports it too). For example, you can do
[[ -e $b ]]
to test whether a file exists. But with [, you have to quote $b, because it spli...