大约有 47,000 项符合查询结果（耗时：0.0504秒） [XML]
setImmediate vs. nextTick
...rying to break up a long running, CPU-bound job using recursion, you would now want to use setImmediate rather than process.nextTick to queue the next iteration as otherwise any I/O event callbacks wouldn't get the chance to run between iterations.
...
Does IE9 support console.log, and is it a real function?
...rowsers. I just spent a day working out why IE9 doesn't like my script and now I know why - it had a console.log in the very first step. Impossible to debug, since turning debug mode made this bug go away in an instant :P Thanks for clarification!!
– f055
Jul 1...
Group by multiple columns in dplyr, using string vector input
...as the expression is wrapped in a call to vars().
– knowah
Aug 15 '19 at 14:13
@Khashir yes, this answer still works @...
this.setState isn't merging states as I would expect
...ability helpers were recently added to React.addons, so with that, you can now do something like:
var newState = React.addons.update(this.state, {
selected: {
name: { $set: 'Barfoo' }
}
});
this.setState(newState);
Immutability helpers documentation.
...
Change priorityQueue to max priorityqueue
... +1;
if (lhs.equals(rhs)) return 0;
return -1;
}
});
Now, the priority queue will reverse all its comparisons, so you will get the maximum element rather than the minimum element.
Hope this helps!
shar...
How do I auto-hide placeholder text upon focus using css or jquery?
...
Edit:
All browsers support now
input:focus::placeholder {
color: transparent;
}
<input type="text" placeholder="Type something here!">
Firefox 15 and IE 10+ also supports this now. To expand on Casey Chu's CSS solution:
input:fo...
Is there a way that I can check if a data attribute exists?
... been set with the .data() method, e.g. $('#dataTable').data('timer', Date.now()). It seems the OP wants to check that the actual data attribute is there. @niiru's solution (or the one you offer in a comment to that solution) is better, in this case.
– Noyo
Dec...
Null vs. False vs. 0 in PHP
...s.
0 is an int. Nothing to do with the rest above, used for mathematics.
Now, what is tricky, it's that in dynamic languages like PHP, all of them have a value in a boolean context, which (in PHP) is False.
If you test it with ==, it's testing the boolean value, so you will get equality. If you t...
What is the fastest way to check if a class has a function defined?
...g decorator called "lru_cache" by Raymond Hettinger. A version of this is now standard in the functools module in Python 3.2.
http://code.activestate.com/recipes/498245-lru-and-lfu-cache-decorators/
http://docs.python.org/release/3.2/library/functools.html
...
Renaming the current file in Vim
...es in the dir name?" -- A: the guy who started the project long ago who is now your boss... promoted out of coding into his true area of expertise: following development methodology fads and forcing them on the team.
– Stabledog
Apr 20 '13 at 13:03
...