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Checking if an Android application is running in the background
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Unfortunately your 'correct' solution does not work for me. Consider you cycle through activities within your app. What happens then is that your 'inForeground' flag goes like this: True, False(Between 1st activity's onPause and 2nd activity's onResume) then Tru...
Rails - Could not find a JavaScript runtime?
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btw The standard rails app that gets created does use uglifier which also requires this I believe.
– Michael Durrant
Aug 17 '11 at 12:39
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Check Whether a User Exists
... user by id command.
id -u name gives you the id of that user.
if the user doesn't exist, you got command return value ($?)1
And as other answers pointed out: if all you want is just to check if the user exists, use if with id directly, as if already checks for the exit code. There's no need to fidd...
What's HTML character code 8203?
What does the character code (HTML) ​ ? I found it in one of my jQuery scripts and wondered what it was..
8 Answ...
Currency formatting in Python
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See the locale module.
This does currency (and date) formatting.
>>> import locale
>>> locale.setlocale( locale.LC_ALL, '' )
'English_United States.1252'
>>> locale.currency( 188518982.18 )
'$188518982.18'
>>> locale...
get the latest fragment in backstack
...t of fragments in the fragmentMananger. Be aware that removing a fragment, does not make the list size decrease (the fragment entry just turn to null). Therefore, a valid solution would be:
public Fragment getTopFragment() {
List<Fragment> fragentList = fragmentManager.getFragments();
Fragm...
Background color of text in SVG
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What does "SourceGraphic" mean here? Does "url(#solid)" actually cause an extra web access?
– Ben Slade
Nov 25 '15 at 19:28
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Convert java.util.Date to java.time.LocalDate
...e-zone is not part of the actual state of java.util.Date.
An Instant also does not contain any information about the time-zone. Thus, to convert from an Instant to a local date it is necessary to specify a time-zone. This might be the default zone - ZoneId.systemDefault() - or it might be a time-zo...
notifyDataSetChange not working from custom adapter
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it's about a BaseAdapter and this adapter does not know to which data it is binded... so if I have an custom object and use custom functions of this object (like custObject.getCount() and custObject.getChildAt(int i) for example), and I want to exchange this object, ...
Why does Windows64 use a different calling convention from all other OSes on x86-64?
...d in registers. On UN*X on the other hand, a leaf function (i.e. one that doesn't call other functions) is not even required to allocate stackspace at all if it needs no more than 128 Bytes of it (yes, you own and can use a certain amount of stack without allocating it ... well, unless you're kerne...