大约有 45,000 项符合查询结果（耗时：0.0733秒） [XML]
What should every JavaScript programmer know? [closed]
...s you spot dark areas in your knowledge. Events are the only thing still a bit obscure to me in this checklist (if the module pattern means "don't clobber the global namespace" and so includes scopes and the var operator).
– silviot
Apr 21 '10 at 19:17
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How can I concatenate regex literals in JavaScript?
...on without using the regular expression literal syntax. This lets you do arbitary string manipulation before it becomes a regular expression object:
var segment_part = "some bit of the regexp";
var pattern = new RegExp("some regex segment" + /*comment here */
segment_part + /* that wa...
How to filter Pandas dataframe using 'in' and 'not in' like in SQL
...y
3 NaN
Why is it worth considering? NumPy functions are usually a bit faster than their pandas equivalents because of lower overhead. Since this is an elementwise operation that does not depend on index alignment, there are very few situations where this method is not an appropriate replace...
Change a Git remote HEAD to point to something besides master
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Excellent! That was the last missing bit.
– berkus
Dec 20 '12 at 19:48
My origin...
What exactly does the Access-Control-Allow-Credentials header do?
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Just want to add to this a little bit to comment on the meaning of "exposed." The spec doesn't require a pre-flight (additional roundtrip to check if the server will allow credentials) for GET requests. Instead of preflighting, the browser will just always ma...
How do I specify the Linq OrderBy argument dynamically?
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You can use a little bit of reflection to construct the expression tree as follows (this is an extension method):
public static IQueryable<TEntity> OrderBy<TEntity>(this IQueryable<TEntity> source, string orderByProperty,
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When should I use jQuery's document.ready function?
...nswers:
jQuery's .on() method: I use the .on() method for AJAX quite a bit
(dynamically creating DOM elements). Should the .on() click handlers
always be inside document.ready?
No, not always. If you load your JS in the document head you will need to. If you are creating the elements after...
How do you format the day of the month to say “11th”, “21st” or “23rd” (ordinal indicator)?
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You guys are off in the weeds, and the tone is taking a bit of turn. No need for that. This question didn't ask about the intricacies of internationalization. Internationalization is certainly a fine topic to discuss, but it should be done on another question with that focus. I'v...
How to initialize a List to a given size (as opposed to capacity)?
...ialize-array). Also AddRange() has O(n) complexity as per msdn. Isn't it a bit counter productive to use the given solution instead of a simple loop?
– Jimmy
Jan 23 '14 at 11:16
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How to change MySQL data directory?
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Well I am bit confused with the use of this command. As I explained before I want to create new databases in new directory. Is it possible with symlink.
– MySQL DBA
Nov 25 '09 at 9:46
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