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How to Deal with Temporary NSManagedObject instances?
I need to create NSManagedObject instances, do some stuff with them and then trash them or store to sqlite db. The problem is, I cannot create instances of NSManagedObject unconnected to NSManagedObjectContext and this means I have to clear up somehow after I decide that I don't need some of ...
How to set iPhone UIView z index?
...rties are there to manage view order. In UIView.h:
@property(nonatomic,readonly) UIView *superview;
@property(nonatomic,readonly,copy) NSArray *subviews;
- (void)removeFromSuperview;
- (void)insertSubview:(UIView *)view atIndex:(NSInteger)index;
- (void)exchangeSubviewAtIndex:(NSInteger)index1 wit...
Creating anonymous objects in php
... PHP 7 it has been possible to create anonymous classes, so you're able to do things like this:
<?php
class Foo {}
$child = new class extends Foo {};
var_dump($child instanceof Foo); // true
?>
You can read more about this in the manual
But I don't know how similar it is imp...
SQL “between” not inclusive
... answered May 2 '13 at 21:03
Gordon LinoffGordon Linoff
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...
How to reverse a singly linked list using only two pointers?
...his is as simple as it gets, and there's no fundamentally-different way of doing it. This algorithm is already O(n) time, and you can't get any faster than that, as you must modify every node.
It looks like your code is on the right track, but it's not quite working in the form above. Here's a wo...
iPhone viewWillAppear not firing
...numerous posts about people having problems with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means.
...
Escaping single quote in PHP when inserting into MySQL [duplicate]
... Yeah ok, thanks for the lesson in proper coding however, this does not answer the question why the two queries to not throw the same error...
– sjw
Apr 22 '10 at 3:01
...
TaifunWiFi 拓展：手机WiFi连接管理 · App Inventor 2 中文网
...
基本WiFi状态检查
when Screen1.Initialize
do
// 检查WiFi是否启用
set WifiEnabled to TaifunWiFi1.IsEnabled
// 获取本地IP
set LocalIP to TaifunWiFi1.LocalIP
// 获取信号强度
set SignalStrength to TaifunWiFi1.SignalStrength
...
What is pseudopolynomial time? How does it differ from polynomial time?
What is pseudopolynomial time ? How does it differ from polynomial time? Some algorithms that run in pseudopolynomial time have runtimes like O(nW) (for the 0/1 Knapsack Problem ) or O(√n) (for trial division ); why doesn't that count as polynomial time?
...
Naming conventions: “State” versus “Status” [closed]
...
IMO:
status == how are you? [good/bad]
state == what are you doing? [resting/working]
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