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How can I get seconds since epoch in Javascript?
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Re: arcane magic: Per these docs, Javascript knows how to convert a Date object to a Number. This means that you can type Number(new Date()) to get a number, or even +(new Date()), or use any Date instance in a numerical context such as new Date()/1000 and Javascript wi...
Can someone explain this 'double negative' trick? [duplicate]
...e whether it's confusing or not. I personally find it highly intuitive to know what's "falsey" and what's "truthy" when cast to a Boolean.
– Chris
Jul 30 '13 at 3:15
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How to get correct timestamp in C#
...date and time. The correct syntax to get current date and time is DateTime.Now, so change this:
String timeStamp = GetTimestamp(new DateTime());
to this:
String timeStamp = GetTimestamp(DateTime.Now);
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Hidden features of Perl?
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There are many non-obvious features in Perl.
For example, did you know that there can be a space after a sigil?
$ perl -wle 'my $x = 3; print $ x'
3
Or that you can give subs numeric names if you use symbolic references?
$ perl -lwe '*4 = sub { print "yes" }; 4->()'
yes
There's a...
How do you display JavaScript datetime in 12 hour AM/PM format?
...If you had to guarantee a zero is there, it would be (0[\d]:[\d]{2}). This now reads, look for 0 plus one other digit, then colon, then the rest.
– Steve Tauber
May 18 '17 at 10:11
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Loading Backbone and Underscore using RequireJS
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RequireJS 2.X now organically addresses non-AMD modules such as Backbone & Underscore much better, using the new shim configuration.
The shim configuration is simple to use: (1) one states the dependencies (deps), if any, (which may...
PowerShell script to return versions of .NET Framework on a machine?
...0 ...
EDIT: For .Net 4.5 and up, this changed slightly again, so there's now a nice MSDN article here explaining how to convert the Release value to a .Net version number, it's a total train wreck :-(
This looks right to me (note that it outputs separate version numbers for WCF & WPF on 3.0. ...
java.util.regex - importance of Pattern.compile()?
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It always seems like you know so much about Java. They should hire you to work for them...
– jjnguy
Nov 12 '09 at 6:24
add a ...
What does the Reflect object do in JavaScript?
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UPDATE 2015:
As pointed out by 7th's answer, now that ES6 (ECMAScript 2015) has been finalized, more appropriate documentation is now available:
ES6 spec, Reflection
MDN Reflect (including details and examples to all of its methods)
Original answer (for (historic) ...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
Git has a well-known, or at least sort-of-well-known, empty tree whose SHA1 is:
3 Answers
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