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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
..., each instance of a ## preprocessing token
in the replacement list (not from an argument) is deleted and the preceding preprocessing
token is concatenated with the following preprocessing token.
So, the replacement list contains x followed by ## and also ## followed by y; so we have:
mine ##...
Difference between if () { } and if () : endif;
...regardless of which tool we may need to use. Specially true for PHP, which from times to times you need to see using the most simplistic editors.
– cregox
Dec 15 '14 at 17:13
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@Autowired and static method
I have @Autowired service which has to be used from within a static method. I know this is wrong but I cannot change the current design as it would require a lot of work, so I need some simple hack for that. I can't change randomMethod() to be non-static and I need to use this autowired bean. An...
Convert integer into byte array (Java)
...Array(0xAABBCCDD);
Result is {0xAA, 0xBB, 0xCC, 0xDD}.
Its reverse is fromByteArray() or fromBytes():
int intValue = Ints.fromByteArray(new byte[]{(byte) 0xAA, (byte) 0xBB, (byte) 0xCC, (byte) 0xDD});
int intValue = Ints.fromBytes((byte) 0xAA, (byte) 0xBB, (byte) 0xCC, (byte) 0xDD);
Result i...
How to initialize const member variable in a class?
... @Chaitanya: C++11 Non-static member initializers are implemented from gcc 4.7.
– Jesse Good
Jan 24 '13 at 7:31
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Tools for Generating Mock Data? [closed]
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a tool that really should not be missing from the list is the Data Generator from Datanamic that populates databases directly or generates insert scripts, has a large collection of pre-installed generators ( and supports multiple databases...
http://www.datanamic.c...
Android Activity as a dialog
...d that your Dialog appears in the recently used apps list
android:excludeFromRecents="true"
If you want to stop your dialog / activity from being destroyed when the user clicks outside of the dialog:
After setContentView() in your Activity use:
this.setFinishOnTouchOutside(false);
Now when I...
How to run a single RSpec test?
...y_spec.rb -e "should be the correct answer"
2019 Update: Rspec2 switched from the 'spec' command to the 'rspec' command.
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How to round float numbers in javascript?
... This doesn't always work. Take Math.round(1.005*100)/100 for example from MDN
– tybro0103
May 3 '16 at 17:54
7
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C/C++ line number
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Reference from GCC manual: "__FUNCTION__ and __PRETTY_FUNCTION__ were treated as string literals; they could be used to initialize char arrays, and they could be concatenated with other string literals. GCC 3.4 and later treat them as ...