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What is a Manifest in Scala and when do you need it?
Since Scala 2.7.2 there is something called Manifest which is a workaround for Java's type erasure. But how does Manifest work exactly and why / when do you need to use it?
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Default height for section header in UITableView
...(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if(section == CUSTOM_SECTION)
{
return CUSTOM_VALUE;
}
return UITableViewAutomaticDimension;
}
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Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?
...ce {
static MyClass *sharedInstance;
@synchronized(self) {
if (sharedInstance == nil) {
sharedInstance = [[MyClass alloc] init];
}
}
return sharedInstance;
}
The benefit of dispatch_once() over this is that it's faster. It's also semantically cleaner, be...
AngularJS routing without the hash '#'
...se $locationProvider.html5Mode(true) to tell angular to use HTML5 strategy if available.
Here the list of browser that support HTML5 strategy: http://caniuse.com/#feat=history
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log4j configuration via JVM argument(s)?
...{path to file}
where {path to file} should be prefixed with file:
Edit: If you are working with log4j2, you need to use
-Dlog4j.configurationFile={path to file}
Taken from answer https://stackoverflow.com/a/34001970/552525
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Does free(ptr) where ptr is NULL corrupt memory?
... ptr to be deallocated, that is, made
available for further allocation. If ptr is a null pointer, no action occurs.
See ISO-IEC 9899.
That being said, when looking at different codebases in the wild, you'll notice people sometimes do:
if (ptr)
free(ptr);
This is because some C runtimes (I...
php check if array contains all array values from another array
I would like to find out if $all contains all $search_this values and return true or false. any idea please?
5 Answers
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Convert a date format in PHP
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What if I get this date 0000-00-00 from mySQL? it returns a wrong date like 31/12/1969 ...
– Enrique
Apr 29 '10 at 22:20
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Git log to get commits only for a specific branch
I want to list all commits that are only part of a specific branch.
11 Answers
11
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Assign output of a program to a variable using a MS batch file
...ens=*" %%i in ('"tasklist | grep explorer"') do set VAR=%%i. Easier for me if there're no quotes in the command itself.
– Paul
Apr 22 at 23:31
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