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How can i tell if an object has a key value observer attached
...SMutableArray like this:
- (void)addObservedObject:(id)object {
if (![_observedObjects containsObject:object]) {
[_observedObjects addObject:object];
}
}
If you want to unobserve the objects you can do something like:
for (id object in _observedObjects) {
if ([object isKindOf...
How to increase the vertical split window size in Vim
... :winc = This will also make them equal.
– nitin_cherian
Nov 13 '13 at 5:29
2
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How to specify the default error page in web.xml?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to change a django QueryDict to Python Dict?
...
In django 1.6: dict(data._iteritems())
– Bas Koopmans
Nov 20 '13 at 15:20
5
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CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术
...0deff\9; /*IE6、7、8识别*/ +background-color:#a200ff;/*IE6、7识别*/ _background-color:#1e0bd1/*IE6识别*/}
@media screen and (-webkit-min-device-pixel-ratio:0){.bb{background-color:#f1ee18}}{} /* Safari(Chrome) 有效 */
@media all and (min-width: 0px){ .bb{background-color:#f1ee18;/*op...
How to customize the background/border colors of a grouped table view cell?
...kgroundView.h
//
// Created by Mike Akers on 11/21/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef enum {
CustomCellBackgroundViewPositionTop,
CustomCellBackgroundViewPositionMiddle,
CustomCellBackgroundViewPositionBottom,
...
Replace only some groups with Regex
...attern = @"-(\d+)-";
var replaced = Regex.Replace(text, pattern, (_match) =>
{
Group group = _match.Groups[1];
string replace = "AA";
return String.Format("{0}{1}{2}", _match.Value.Substring(0, group.Index - _match.Index), replace, _match.Value...
How to change MenuItem icon in ActionBar programmatically
...m = menu.findItem(R.id.action_settings);
// set your desired icon here based on a flag if you like
settingsItem.setIcon(ContextCompat.getDrawable(this, R.drawable.ic_launcher));
return super.onPrepareOptionsMenu(menu);
}
...
How to declare string constants in JavaScript? [duplicate]
...rs' implementations (and Node) have constants, used with const.
const SOME_VALUE = "Your string";
This const means that you can't reassign it to any other value.
Check the compatibility notes to see if your targeted browsers are supported.
Alternatively, you could also modify the first example,...
Ignoring an already checked-in directory's contents?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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