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check android application is in foreground or not? [duplicate]
...ses();
if (appProcesses == null) {
return false;
}
final String packageName = context.getPackageName();
for (RunningAppProcessInfo appProcess : appProcesses) {
if (appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND && appProcess.processName.equal...
Reducing MongoDB database file size
...
UPDATE: with the compact command and WiredTiger it looks like the extra disk space will actually be released to the OS.
UPDATE: as of v1.9+ there is a compact command.
This command will perform a compaction "in-line". It will still need some extra space, but not as much.
MongoDB comp...
Filter element based on .data() key/value
...sentially equivalent. Using .find() seems like it may be slower due to the extra function call (although I'm not positive about this). Please correct me if I'm wrong about any of this (I really wish this method worked).
– Bryan Downing
Feb 25 '13 at 22:24
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When should you use 'friend' in C++?
... access the private parts of class Child.
friend class Mother;
public:
string name( void );
protected:
void setName( string newName );
};
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How to convert an Stream into a byte[] in C#? [duplicate]
... Yes it does. You could use MemoryStream.GetBuffer() to avoid the extra copy but beware that the size of the array returned is not the size of the data.
– James Dingle
Apr 30 '12 at 3:25
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Passing argument to alias in bash [duplicate]
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An alias will expand to the string it represents. Anything after the alias will appear after its expansion without needing to be or able to be passed as explicit arguments (e.g. $1).
$ alias foo='/path/to/bar'
$ foo some args
will get expanded to
$ ...
Why aren't pointers initialized with NULL by default?
... then assign.
So now we have the situation that the compiler has added an extra instruction to the code that initializes the variable to NULL then later the developer code is added to do the correct initialization. Or under other conditions the variable is potentially never used. A lot of C++ devel...
Difference between HashMap, LinkedHashMap and TreeMap
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private TreeMap<String ,Integer> mySection2 = new TreeMap<>(); mySection2.put("abc1", 2); mySection2.put("abc2",5); mySection2.put("abc3",3); ...
Java 8 Iterable.forEach() vs foreach loop
...c.join(mSession, join));
is not intended as a shortcut for writing
for (String join : joins) {
mIrc.join(mSession, join);
}
and should certainly not be used in this way. Instead it is intended as a shortcut (although it is not exactly the same) for writing
joins.forEach(new Consumer<T&g...
No submodule mapping found in .gitmodule for a path that's not a submodule
...
in the file .gitmodules, I replaced string
"path = thirdsrc\boost"
with
"path = thirdsrc/boost",
and it solved! - -
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