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Safely turning a JSON string into an object
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I wish people would stop down-voting this answer. It was accurate when it was posted in 2008. Just upvote the new one.
– John
Jan 16 '15 at 2:26
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What is JavaScript garbage collection?
...cope variable. All
of those objects are instructed to
tear themselves down, which destroys
any circular references.
The main purpose of garbage collection is to allow the programmer not to worry about memory management of the objects they create and use, though of course there's no avoid...
Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
...y). For example, (2, 1) means that the point is 2 pixels left, and 1 pixel down.
You can read up more about coordinate systems here - http://en.wikipedia.org/wiki/Coordinate_system
But what you need to know is that, in iOS, every view has it's OWN coordinate system, where the top left corner is th...
Where can I learn jQuery? Is it worth it?
... Hardly, but it was such a pleasure to read that I couldn't put it down.
– yukondude
Mar 21 '09 at 15:36
add a comment
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Make UINavigationBar transparent
...nother way, maybe it's just a bug in the beta software, but I'm writing it down there, just in case
(swift 5)
import UIKit
class TransparentNavBar :UINavigationBar {
override func awakeFromNib() {
super.awakeFromNib()
self.setBackgroundImage(UIImage(), for: .default)
s...
Class does not implement its superclass's required members
...cial set of inheritance rules, but protocol conformance is still inherited down the chain. If a parent class conforms to a protocol, its subclasses must to conform to that protocol.
Ordinarily, this isn't a problem, because most protocols only require methods which don't play by special inheritance...
Counting DISTINCT over multiple columns
...mp
3 )
4 /
COUNT(*)
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9
SQL>
edit
I went down a blind alley with analytics but the answer was depressingly obvious...
SQL> select count(distinct concat(deptno,job)) from emp
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COUNT(DISTINCTCONCAT(DEPTNO,JOB))
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How to get GET (query string) variables in Express.js on Node.js?
...correct answer. See here: stackoverflow.com/questions/17007997/… (scroll down to answer below the accepted answer)
– Joseph Juhnke
Nov 6 '14 at 20:07
3
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How can I update the current line in a C# Windows Console App?
...le to wrap to the next line or you may get issues with the content running down the console window anyway.
– Mandrake
Mar 28 '12 at 19:11
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Comparison of CI Servers? [closed]
... are useless unless there's filtering. To add insult to injury, there's no download (csv) and the markdown cannot be downloaded directly. Even that resisted copying into excel... I gave up.
– sehe
Nov 28 '13 at 9:03
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