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How to erase the file contents of text file in Python?
...e to overwrite the file. In C++:
#include <fstream>
std::ofstream("test.txt", std::ios::out).close();
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Python JSON serialize a Decimal object
...plejson.dumps(decimal.Decimal('2.2')) also works: no explicit use_decimal (tested on simplejson/3.6.0). Another way to load it back is: json.loads(s, parse_float=Decimal) i.e., you can read it using stdlib json (and old simplejson versions are also supported).
– jfs
...
What is a “callback” in C and how are they implemented?
...ling in a Standard C mode with warnings on. You can also write a minimised test program. Code such as those in libsrtp gives no warnings. I presume, then, that when such a type appears as a function argument, it is required to 'decay' to a pointer-to-function, just like arrays decay to pointers to t...
.net implementation of bcrypt
...d should work with any
little-endian CLI implementation -- it
has been tested with Microsoft .NET
and Mono.
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Possible heap pollution via varargs parameter
...led with List[] non-varargs type.
Here is an example:
public static void testCode(){
List[] b = new List[1];
test(b);
}
@SafeVarargs
public static void test(List<A>... a){
}
As you can see List[] b can contain any type of consumer, and yet this code compiles. If you use varargs, t...
Are database triggers evil? [closed]
...shed out into application logic where it can be easily refactored and unit-tested. It's real life I deal with that makes me say "stay away from triggers"... it's not the fault of triggers as it's not the fault of stones that windows get broken.
– Rbjz
Jan 12 '1...
Hudson vs Jenkins in 2012 [closed]
...his version is then branched, any important fixes (which have been "battle-tested") are backported into this Jenkins version, and then this release gets extra testing by various people and companies. Once it's ready for release, this becomes the new LTS version.
As new high-priority fixes come alo...
How to remove the left part of a string?
... front so it's only used if a "=" is in the string. Otherwise you can also test for the length of the result of split() and if it's ==2.
– MrTopf
Mar 1 '09 at 22:33
8
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System.MissingMethodException: Method not found?
...ld version of a DLL still lingering somewhere around. Make sure that the latest assemblies are deployed and no duplicated older assemblies are hiding in certain folders. Your best bet would be to delete every built item and rebuild/redeploy the entire solution.
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How to check if a view controller is presented modally or pushed on a navigation stack?
...
Take with a grain of salt, didn't test.
- (BOOL)isModal {
if([self presentingViewController])
return YES;
if([[[self navigationController] presentingViewController] presentedViewController] == [self navigationController])
return Y...