大约有 47,000 项符合查询结果（耗时：0.0562秒） [XML]
Which MySQL data type to use for storing boolean values
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This is very clever! I used to write clever code, now I avoid it like the plague. I now want my code to have crystal clear intent, not just correct behaviour. My advice? Only do this if you want to confuse anyone who has to support the code/database. For instance, in PHP bot...
Prevent form submission on Enter key press
... from being handled further.
NOTE:
It's been pointed out that keyCode is now deprecated. The next best alternative which has also been deprecated.
Unfortunately the favored standard key, which is widely supported by modern browsers, has some dodgy behavior in IE and Edge. Anything older than IE11...
How do I git rebase the first commit?
I used git init to create a fresh repo, then made three commits. Now I want to rebase to go back and amend my first commit, but if I do git rebase -i HEAD~3 it complains! If I try the same with HEAD~2 then it kinda works but only lets me rearrange the last two commits.
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The “unexpected ++” error in jslint [duplicate]
...meone comes along and moves the space?
var i = 0, j = 0;
alert(i+ ++j);
Now this first increments j, and then adds i to the new value of j, resulting in 1 being alerted.
This could easily be solved by doing
var i = 0, j = 0;
alert((i++) +j);
Now this cannot be mistaken.
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How to get complete month name from DateTime
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Use the "MMMM" custom format specifier:
DateTime.Now.ToString("MMMM");
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Fastest way to determine if record exists
...I'm not sure if an Index exists on this field, and my newbish SQL doesn't know how to find out. I am working with this DB from Java via JDBC and the database is remotely located in a colo somewhere. I've only been provided a "database summary" which just details which fields exist in each table, the...
In which scenario do I use a particular STL container?
...in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of them is used.
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Best way to determine user's locale within browser
...ice in the HTML, and use JavaScript to parse the language header. I don't know of any existing library code to do this, though, since Accept-Language parsing is almost always done on the server side.
Whatever you end up doing, you certainly need a user override because it will always guess wrong fo...
how to solve “ruby installation is missing psych” error?
...ven though it was successfully installed, it complained about libyaml. and now every time i wanna install a gem (say rails) this warning shows up:
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How to change Hash values?
... probably safe, because the modification doesn't change future iterations. Now if another key (that wasn't the one passed to the block) was assigned, then there would be trouble.
– Kelvin
Mar 20 '12 at 18:15
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