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How to check if a variable is not null?
...answered Dec 5 '10 at 22:22
Tim DownTim Down
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What is a good pattern for using a Global Mutex in C#?
...ulti-user usage
// edited by 'Marc' to work also on localized systems (don't use just "Everyone")
var allowEveryoneRule =
new MutexAccessRule( new SecurityIdentifier( WellKnownSidType.WorldSid
, null)
, Mu...
How can I deploy/push only a subdirectory of my git repo to Heroku?
...uming you want to push your folder 'output' as the root to Heroku, you can do:
git subtree push --prefix output heroku master
It appears currently that git-subtree is being included into git-core, but I don't know if that version of git-core has been released yet.
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What are the differences between GPL v2 and GPL v3 licenses? [closed]
...sulting a lawyer (one who knows about software license issues, though). In doing these things (and more), they more than doubled the length of the GPL. Although GPLv3 is a complex legal document, it was designed to be read and reasonably understood by software developers. There is also a guide to un...
Nested defaultdict of defaultdict
...nt json.dumps(x)
{"a": {"b": {"c": {"d": {}}}}}
Of course you could also do this with a lambda, but I find lambdas to be less readable. In any case it would look like this:
rec_dd = lambda: defaultdict(rec_dd)
share
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Warning :-Presenting view controllers on detached view controllers is discouraged
...ng the warning in a push navigation, you can directly use :
[self.view.window.rootViewController presentViewController:viewController animated:YES completion:nil];
And then in your modal view controller, when everything is finished, you can just call :
[self dismissViewControllerAnimated:YES co...
Calculate a Running Total in SQL Server
... the Over clause is somewhat limited.
Oracle (and ANSI-SQL) allow you to do things like:
SELECT somedate, somevalue,
SUM(somevalue) OVER(ORDER BY somedate
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)
AS RunningTotal
FROM Table
SQL Server gives you no clean solution t...
C/C++ Struct vs Class
.... It logically represents a single value, similar to primitive types (int, double, etc.). 2. It has an instance size under 16 bytes. 3. It is immutable.
– Abhijeet
Dec 13 '15 at 14:05
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Redis - Connect to Remote Server
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SO, to be clear, you are downvoting an answer to the problem posted because you have a related (but clearly not identical) problem it doesn't address? Whilst I agree with posting your solution, downvoting a correct answer because your problem was dif...
jQuery .each() index?
...
$('#list option').each(function(index){
//do stuff
console.log(index);
});
logs the index :)
a more detailed example is below.
function run_each() {
var $results = $(".results");
$results.empty();
$results.append("==================== START...