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What does = +_ mean in JavaScript
...ample:
+"1"
cast "1" to pure number 1.
var _ = "1";
var r = +_;
r is now 1, not "1".
Moreover, according to the MDN page on Arithmetic Operators:
The unary plus operator precedes its operand and evaluates to its
operand but attempts to converts it into a number, if it isn't
already. [...
Sort Go map values by keys
...
Ah, okay. Thank you for teaching me. Now, it is printing all even then all odd. play.golang.org/p/K2y3m4Zzqd How can I get it to alternate so that it is in order?
– gramme.ninja
Apr 28 '14 at 2:20
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Apply .gitignore on an existing repository already tracking large number of files
...ndex, then just run:
git add .
Commit it:
git commit -m ".gitignore is now working"
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Redirect all to index.php using htaccess
...updated Feb '18 and Jan '19)
It's not actually necessary (nor even common now) to set the path as a $_GET variable, many frameworks will rely on $_SERVER['REQUEST_URI'] to retrieve the same information - normally to determine which Controller to use - but the principle is exactly the same.
This do...
unit testing of private functions with mocha and node.js
... or something else that can communicate to the module "you're being tested now". The instances where I've had to do this were in a RequireJS environment, and I've used module.config for this purpose.
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How to set Python's default version to 3.x on OS X?
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This way, your alias will work across shells.
With this, python command now invokes python3. If you want to invoke the "original" python (that refers to python2) on occasion, you can use command python, which will leaving the alias untouched, and works in all shells.
If you launch interpreters m...
Get local IP address
... is right - if there are more than 1 IP address given to you, you need to know which network you're using. Guessing by taking the first or last is not the correct solution.
– gbjbaanb
Sep 4 '13 at 9:11
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C++ mark as deprecated
...llows for the attribute to be in the same places as __declspec(deprecated) now, so the macro can be simplified.
– bames53
Nov 29 '12 at 17:06
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'is' versus try cast with null check
... casts seem to be performed as fast as they used to be but as and linq are now approximately 3 times faster.
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unique object identifier in javascript
I need to do some experiment and I need to know some kind of unique identifier for objects in javascript, so I can see if they are the same. I don't want to use equality operators, I need something like the id() function in python.
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