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Are C++ enums signed or unsigned?
Are C++ enums signed or unsigned? And by extension is it safe to validate an input by checking that it is = your min value (assuming you started at 0 and incremented by 1)?
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What kind of Garbage Collection does Go use?
...:
hybrid stop-the-world/concurrent collector
stop-the-world part limited by a 10ms deadline
CPU cores dedicated to running the concurrent collector
tri-color mark-and-sweep algorithm
non-generational
non-compacting
fully precise
incurs a small cost if the program is moving pointers around
lower la...
Run Cron job every N minutes plus offset
... range (0), then at all successive minutes that are distant from the first by step (1), until the last (59).
Which is why */20 * * * * will run at 0 minutes, 20 minutes after, and 40 minutes after -- which is the same as every 20 minutes. However, */25 * * * * will run at 0 minutes, 25 minutes afte...
How do I get the currently displayed fragment?
...yFragment myFragment = (MyFragment)getSupportFragmentManager().findFragmentByTag("MY_FRAGMENT");
if (myFragment != null && myFragment.isVisible()) {
// add your code here
}
See also http://developer.android.com/reference/android/app/Fragment.html
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Reading GHC Core
...ich all Haskell is translated. The (approximate) grammar for Core is given by:
Core is closely related to the simpler and better known System F. All transformations GHC does on the Core level are type-preserving refactorings of this Core representation, to improve performance. And, not so well kn...
Ruby, Difference between exec, system and %x() or Backticks
What is the difference between the following Ruby methods?
3 Answers
3
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Different class for the last element in ng-repeat
...e {
color: #800;
}
The :last-of-type selector is currently supported by 98% of browsers
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How to convert .pfx file to keystore with private key?
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Using JDK 1.6 or later
It has been pointed out by Justin in the comments below that keytool alone is capable of doing this using the following command (although only in JDK 1.6 and later):
keytool -importkeystore -srckeystore mypfxfile.pfx -srcstoretype pkcs12
-destkeys...
What are the differences between poll and select?
...but I've never
seen one. Both select() and poll() are being standardized by POSIX
1003.1g.
October 2017 Update:
The email referenced above is at least as old as 2001; the poll() command is now (2017) supported across all modern operating systems - including BSD. In fact, some people believe ...
Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
...re" /> if you change between HTTP and HTTPS... the protocol is detected by the browser, and you won't get mixed content warnings on HTTPS.
– Chris Jacob
Nov 23 '11 at 1:45
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