大约有 30,000 项符合查询结果（耗时：0.0653秒） [XML]
Use of alloc init instead of new
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answered Apr 5 '09 at 23:32
Jeremy StanleyJeremy Stanley
5,62611 gold badge2525 silver badges2121 bronze badges
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When and why JPA entities should implement Serializable interface?
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answered Apr 9 '17 at 2:32
aman maharjanaman maharjan
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Undoing a 'git push'
...tion on SO
– Jaime
Oct 28 '13 at 17:32
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How do I measure the execution time of JavaScript code with callbacks?
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32
Yep, it's a lot more precise and you can store the result in a variable
– Dallas Clark
Jul 1 '15 at ...
jQuery get value of selected radio button
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Just use.
$('input[name="name_of_your_radiobutton"]:checked').val();
So easy it is.
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How to disable HTML button using JavaScript?
...n purposes
// don't ever actually use document.write(), eval(), or access __proto__
function log(value) {
document.write(`<pre>${value}</pre>`);
}
function logChain(code) {
log(code);
var object = eval(code);
do {
log(`${object.constructor.name} ${object instan...
Is there a way to provide named parameters in a function call in JavaScript?
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answered Aug 3 '12 at 13:32
Felix KlingFelix Kling
666k151151 gold badges968968 silver badges10321032 bronze badges
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Attach parameter to button.addTarget action in Swift
...tton.addTarget(self, action: #selector(YourViewController.webButtonTouched(_:)), for:.touchUpInside)
webButton.params["myvalue"] = "bob"
then finally catch it all here
@IBAction func webButtonTouched(_ sender: PassableUIButton) {
print(sender.params["myvalue"] ?? "")
}
You do this one time ...
Paste multiple columns together
...c('d', 'e', 'f'),
'd' = c('g', 'h', 'i'))
tidyr::unite_(data, paste(colnames(data)[-1], collapse="_"), colnames(data)[-1])
a b_c_d
1 1 a_d_g
2 2 b_e_h
3 3 c_f_i
Edit: Exclude first column, everything else gets pasted.
# tidyr_0.6.3
unite(data, newCol, -a)
# or by colum...
How can jQuery deferred be used?
...he new Deferred object and the attached methods .when , .Deferred and ._Deferred .
11 Answers
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