大约有 19,000 项符合查询结果（耗时：0.0344秒） [XML]
How do I select child elements of any depth using XPath?
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You're almost there. Simply use:
//form[@id='myform']//input[@type='submit']
The // shortcut can also be used inside an expression.
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How to get the client IP address in PHP [duplicate]
...there is also a special IPv6 notation for IPv4 addresses which in its full form can be up to 45 characters. So if you know what you are doing you can use 39 characters, but if you just want to set and forget it, use 45).
sha...
How to send POST request?
...json)
Sample output:
{
"args": {},
"data": "",
"files": {},
"form": {
"foo": "bar"
},
"headers": {
"Accept-Encoding": "identity",
"Content-Length": "7",
"Content-Type": "application/x-www-form-urlencoded",
"Host": "httpbin.org",
"User-Agent": "Python-ur...
ng-options with simple array init
... if you get select's value with angular, but in my case (ie classic submit form), values will be 0,1,2,3, not var1,var2,var3
– Dragu
Aug 13 '13 at 6:45
1
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Can attributes be added dynamically in C#?
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No, it's not.
Attributes are meta-data and stored in binary-form in the compiled assembly (that's also why you can only use simple types in them).
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Which is better in python, del or delattr?
...achine).
Like the others have said, you should really only use the second form when the attribute that you're deleting is determined dynamically.
[Edited to show the bytecode instructions generated inside a function, where the compiler can use LOAD_FAST and LOAD_GLOBAL]
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Python 2.7: Print to File
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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What's the algorithm to calculate aspect ratio?
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@Dementic, that is the simplest form of the fraction, hence the correct aspect ratio, and 158 other people (including the OP) seem to agree :-). If you have some other idea of what would be better, please let me know and I'll look at adjusting the answer.
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Sort Dictionary by keys
...t to iterate over both the keys and the values in a key sorted order, this form is quite succinct
let d = [
"A" : [1, 2],
"Z" : [3, 4],
"D" : [5, 6]
]
Swift 1,2:
for (k,v) in Array(d).sorted({$0.0 < $1.0}) {
println("\(k):\(v)")
}
Swift 3+:
for (k,v) in Array(d).sorted(by: {$0.0...
Bash script prints “Command Not Found” on empty lines
...s2unix script.sh
That wil convert line endings, etc from Windows to unix format. i.e. it strips \r (CR) from line endings to change them from \r\n (CR+LF) to \n (LF).
More details about the dos2unix command (man page)
Another way to tell if your file is in dos/Win format:
cat scriptname.sh |...