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What does !! mean in ruby?
Just wondering what !! is in Ruby.
8 Answers
8
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What is the proper way to test if a parameter is empty in a batch file?
...spaces in the argument, otherwise you will get a …was unexpected at this time error.
– Synetech
Feb 4 '13 at 19:41
14
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How do I make background-size work in IE?
Is there any known way to make the CSS style background-size work in IE?
8 Answers
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How to customize ?
Is it possible to change the appearance of <input type="file"> ?
18 Answers
18...
How to determine when Fragment becomes visible in ViewPager
...The outdated answer:
In most use cases, ViewPager only show one page at a time, but the pre-cached fragments are also put to "visible" state (actually invisible) if you are using FragmentStatePagerAdapter in Android Support Library pre-r11.
I override :
public class MyFragment extends Fragment {
...
How to create a file in memory for user to download, but not through server?
...ter removing elem. According to the docs for URL.createObjectURL:
Each time you call createObjectURL(), a new object URL is created, even if you've already created one for the same object. Each of these must be released by calling URL.revokeObjectURL() when you no longer need them. Browsers will...
Convert from java.util.date to JodaTime
I want to convert a java.util.Date to JodaTime so as to carry out subtractions between dates. Is there a good concise way to convert from Date to JodaTime ?
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HTTPURLConnection Doesn't Follow Redirect from HTTP to HTTPS
...g, Integer> visited;
HttpURLConnection conn;
String location;
int times;
...
visited = new HashMap<>();
while (true)
{
times = visited.compute(url, (key, count) -> count == null ? 1 : count + 1);
if (times > 3)
throw new IOException("Stuck in redirec...
How to properly add include directories with CMake
...jects which you will append via a series of add_subdirectory commands. Sometimes people say that such approach is legacy.
A more elegant way is with target_include_directories. It allows to append a directory for a specific project/target without (maybe) unnecessary inheritance or clashing of variou...
Where do alpha testers download Google Play Android apps?
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Also note: It sometimes takes 24-48 hours for your APK to appear. Annoyingly, it just appears as a vague error until it is available. It'd be nice if it mentioned that.
– Anthony
Nov 12 '14 at 3:52
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