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What does “javascript:void(0)” mean?
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answered Aug 18 '09 at 5:23
rahulrahul
170k4646 gold badges216216 silver badges251251 bronze badges
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How do you query for “is not null” in Mongo?
...k value"});
db.test.insert({"num":2, "check":null});
db.test.insert({"num":3});
This will return all three documents:
db.test.find();
This will return the first and second documents only:
db.test.find({"check":{$exists:true}});
This will return the first document only:
db.test.find({"check":{$ne:...
How can I make a clickable link in an NSAttributedString?
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ujellujell
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How to make/get a multi size .ico file? [closed]
... that, e.g. on Windows, the 16x16 size is used for the app's top bar but a 32x32 size version is used when the various open apps are shown when using Alt-Tab). Once I have that .ico file, I know how to use it within my widget toolkit to get this effect, but I don't know how to get it.
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Possible to iterate backwards through a foreach?
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Shimmy Weitzhandler
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answered Jul 31 '09 at 9:40
Sam HarwellSam Harwell
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Create space at the beginning of a UITextField
...ct {
return UIEdgeInsetsInsetRect(bounds, padding)
}
}
Swift 3:
class TextField: UITextField {
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
override func textRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, paddin...
How to avoid 'cannot read property of undefined' errors?
...al chaining.
TypeScript has added support for optional chaining in version 3.7.
// use it like this
obj?.a?.lot?.of?.properties
Solution for JavaScript before ECMASCript 2020 or TypeScript older than version 3.7:
A quick workaround is using a try/catch helper function with ES6 arrow function:...
How can I detect if a selector returns null?
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edited Jun 23 '11 at 5:43
answered May 28 '09 at 11:10
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How to execute an .SQL script file using c#
... kame
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answered Nov 13 '09 at 12:12
surajit khamrai surajit khamrai
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Download multiple files with a single action
... Jacob RelkinJacob Relkin
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