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Case insensitive string as HashMap key
I would like to use case insensitive string as a HashMap key for the following reasons.
12 Answers
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Should a retrieval method return 'null' or throw an exception when it can't produce the return value
...xception would mean that there was a problem.
If the value can be missing or present and both are valid for the application logic then return a null.
More important: What do you do other places in the code? Consistency is important.
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Piping both stdout and stderr in bash?
It seems that newer versions of bash have the &> operator, which (if I understand correctly), redirects both stdout and stderr to a file ( &>> appends to the file instead, as Adrian clarified).
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What is meant by Resource Acquisition is Initialization (RAII)?
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It's a really terrible name for an incredibly powerful concept, and perhaps one of the number 1 things that C++ developers miss when they switch to other languages. There has been a bit of a movement to try to rename this concept as Scope-Bound Resource...
Android and in TextView
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That works great. You can add that to xml or in java code. Work fine in java code, in xml I haven't tested to much, but it should do the job.
– Mikooos
Jul 4 '11 at 7:52
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Regex, every non-alphanumeric character except white space or colon
... answered May 19 '11 at 4:00
Tudor ConstantinTudor Constantin
23k77 gold badges4343 silver badges6363 bronze badges
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Determine installed PowerShell version
...he host's version to reflect their product
version — which is entirely correct, but not what you're looking for.
PS C:\> $PSVersionTable.PSVersion
Major Minor Build Revision
----- ----- ----- --------
4 0 -1 -1
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What does the “assert” keyword do? [duplicate]
What does assert do?
For example in the function:
8 Answers
8
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How can jQuery deferred be used?
...che = {};
function getData( val ){
// return either the cached value or jqXHR object wrapped Promise
return $.when(
cache[ val ] ||
$.ajax('/foo/', {
data: { value: val },
dataType: 'json',
success: function( resp ){
cach...
What does the 'static' keyword do in a class?
...static field exists[1] even if you create a million instances of the class or you don't create any. It will be shared by all instances.
Since static methods also do not belong to a specific instance, they can't refer to instance members. In the example given, main does not know which instance of th...