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Proper way to exit iPhone application?
...ck the Q&A here: https://developer.apple.com/library/content/qa/qa1561/_index.html
Q: How do I programmatically quit my iOS application?
There is no API provided for gracefully terminating an iOS application.
In iOS, the user presses the Home button to close applications. Should y...
ALTER TABLE to add a composite primary key
...nt drop column id;
ERROR 1025 (HY000): Error on rename of
'./test/#sql-a04_b' to './test/parent' (errno: 150).
If you want to drop a primary key that's being referenced by another table, you will have to drop the foreign key in that other table first. You can recreate that foreign key if you sti...
Padding is invalid and cannot be removed?
...he code for CryptoStream.Dispose(bool) is: if (disposing) { if (!this._finalBlockTransformed) { this.FlushFinalBlock(); } this._stream.Close(); }
– Kevin Doyon
Mar 16 '17 at 20:09
...
Convert Bitmap to File
...eger, String> {
Context context;
Bitmap bitmap;
String path_external = Environment.getExternalStorageDirectory() + File.separator + "temporary_file.jpg";
public fileFromBitmap(Bitmap bitmap, Context context) {
this.bitmap = bitmap;
this.context= context;
}
...
Git pull from another repository
...ag. See stackoverflow.com/a/37938036/3799847
– sfinks_29
Oct 26 '17 at 2:24
5
I needed to issue g...
Build.scala, % and %% symbols meaning
...ithout the %%:
val appDependencies = Seq(
"org.scala-tools" % "scala-stm_2.9.1" % "0.3"
)
Assuming the scalaVersion for your build is 2.9.1, the following is identical:
val appDependencies = Seq(
"org.scala-tools" %% "scala-stm" % "0.3"
)
As you can see above, if you use %%, you don't...
Parallelize Bash script with maximum number of processes
...
cpus=$(getconf _NPROCESSORS_ONLN)
– mr.spuratic
Dec 3 '13 at 18:21
1
...
Extract only right most n letters from a string
...y, as many of them are decent functions.
– ingredient_15939
Aug 2 '14 at 3:52
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show 1 more comment
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What is the difference between vmalloc and kmalloc?
...allocate memory during the handling of a system call, should I specify GFP_ATOMIC ? Is a system call executed in an atomic context?
...
IPC performance: Named Pipe vs Socket
...ults are get with IPC benchmarking:
System: Linux (Linux ubuntu 4.4.0 x86_64 i7-6700K 4.00GHz)
Message: 128 bytes
Messages count: 1000000
Pipe benchmark:
Message size: 128
Message count: 1000000
Total duration: 27367.454 ms
Average duration: 27.319 us
Minimum duration: 5.888...