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Subtract 7 days from current date
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use dateByAddingTimeInterval method:
NSDate *now = [NSDate date];
NSDate *sevenDaysAgo = [now dateByAddingTimeInterval:-7*24*60*60];
NSLog(@"7 days ago: %@", sevenDaysAgo);
output:
7 days ago: 2012-04-11 11:35:38 +0000
Hope it helps
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How do I ignore files in Subversion?
...ectory.
svn status
> 0 unversioned files # ...but now the file is ignored!
cd subdirectory # now open a subdirectory.
echo "foo" > "ignoreThis.txt" # create another file named "ignoreThis.txt".
svn status
> ? ./subdirecto...
Convert String to Float in Swift
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Swift 2.0+
Now with Swift 2.0 you can just use Float(Wage.text) which returns a Float? type. More clear than the below solution which just returns 0.
If you want a 0 value for an invalid Float for some reason you can use Float(Wage.tex...
What is the reason behind cbegin/cend?
...ref = vec;
std::for_each(vec_ref.begin(), vec_ref.end(), SomeFunctor());
Now, we introduce cbegin/cend:
std::for_each(vec.cbegin(), vec.cend(), SomeFunctor());
Now, we have syntactic assurances that SomeFunctor cannot modify the elements of the vector (without a const-cast, of course). We expli...
How to print time in format: 2009‐08‐10 18:17:54.811
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It's an even better answer now, and props for looking up how to handle the millisecond part. I think your buffer is now a little longer than it needs to be, though.
– Jack Kelly
Sep 9 '10 at 3:56
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What is the difference between “word-break: break-all” versus “word-wrap: break-word” in CSS
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Note that the W3C link that @squareman mentioned is now w3.org/TR/css-text-3/#overflow-wrap-property
– Charles Wood
Jun 26 '19 at 18:26
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What does Expression.Quote() do that Expression.Constant() can’t already do?
... is a factory for adders that are bound to the outer lambda's parameter.
Now, suppose we wish to represent this as an expression tree that will later be compiled and executed. What should the body of the expression tree be? It depends on whether you want the compiled state to return a delegate or ...
Fixed position but relative to container
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Short answer: no. (It is now possible with CSS transform. See the edit below)
Long answer: The problem with using "fixed" positioning is that it takes the element out of flow. thus it can't be re-positioned relative to its parent because it's as if ...
When is JavaScript's eval() not evil?
...-looking command". So, when is it OK to use something dangerous? When you know what the danger is, and when you're taking the appropriate precautions.
To the point, let's look at the dangers in the use of eval(). There are probably many small hidden dangers just like everything else, but the two bi...
Convert a PHP script into a stand-alone windows executable
...ritten a small PHP script which I run from the command line using PHP-CLI. Now I want to hand over this script to someone but I do not want to:
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