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How can I compare two dates in PHP?
...t in YYYY-MM-DD and then string comparison will work because '1' > '0', etc.
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postgresql - sql - count of `true` values
... on a column that uses another column as the predicate, while allowing to fetch differently filtered aggregates in a single query:
select count(*),
sum(otherCol) filter (where myCol)
from tbl;
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What is the concept of erasure in generics in Java?
...serted, the new foreach-style for loops are expanded to regular for loops, etc. It is nice to see the little things that are happening automagically.
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How to deal with IntelliJ IDEA project files under Git source control constantly changing?
...s user-specific)
Except some other files that might contain passwords/keys/etc (see above link for details)
This sample .gitignore file might be a useful reference, though you should still read the above link to understand why these entries appear and decide if you need them.
Personally I also ig...
Removing event listener which was added with bind
...
constructor(props){
super(props);
// it's a trick! needed in order to overcome the remove event listener
this.onChange = this.onChange.bind(this);
}
// then as regular...
componentDidMount (){
AppStore.addChangeListener(this.onChange);
}
componentWillUnmo...
Wrap a delegate in an IEqualityComparer
...e hashing behind the scenes (e.g., LINQ's GroupBy, Distinct, Except, Join, etc) and the MS contract regarding hashing is broken in this implementation. Here's MS's documentation excerpt: "Implementations are required to ensure that if the Equals method returns true for two objects x and y, then the ...
JavaScript OOP in NodeJS: how?
...ws us to use Javascript "classes" like we would with Java, C++, C#, Swift, etc.
Screenshot from the video showing how to write and instantiate a Javascript class/subclass:
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Testing the type of a DOM element in JavaScript
....nodeName.match(/\bTBODY\b/i) or element.nodeName.toLowerCase() == 'tbody' etc.
– Robusto
Sep 27 '12 at 16:05
9
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How to compare DateTime in C#?
...eTime.Compare (This is also relevant for operators like >, <, == and etc.):
To determine the relationship of t1 to t2, the Compare method compares
the Ticks property of t1 and t2 but ignores their Kind property.
Before comparing DateTime objects, ensure that the objects represent
tim...
Parse string to DateTime in C#
...ateTime? dt = dtStr.ToDate("yyyy-MM-dd HH:mm");
Unlike Parse, ParseExact etc. it does not throw an exception, and allows you to check via
if (dt.HasValue) { // continue processing } else { // do error handling }
whether the conversion was successful (in this case dt has a value you can access vi...