我尝试将一个参数从指令传递给控制器中定义的方法.
我使用隔离范围.
这是相关的代码和小提琴演示:
HTML
<div ng-controller="MapCtrl">
<map id="map_canvas" call='callMe()'></map>
</div>
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JS
var module = angular.module('googleMap', []);
module.directive('map', function() {
return {
restrict: 'E',
replace: true,
scope:{
callMe : '&call'
},
template: '<div></div>',
link: function(scope, element, attrs) {
console.log(element);
/* ... */
scope.callMe('hey');
/* ... */
}
};
});
function MapCtrl($scope) {
$scope.callMe = function(val){
alert(val);
};
}
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为什么我得到val=undefined?它应该是hey
谢谢,
我遵循了表头结构:
<th>
<a ng-click="sort_by(order)" style="color: #555555;">
<span ng-transclude="">
<span class="ng-scope">Some text</span>
</span>
<i class="icon-chevron-down"></i>
</a>
</th>
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问题是,当我双击标题链接时,背景被选中(蓝色)并且看起来很乱。
如何避免这种行为?
谢谢,

我有表watchers:
------------------------------------------
time_type | time_count | timestamp_created
------------------------------------------
'hour' | 1 | 2016-12-08 15:56:26.169614
'hour' | 13 | ...
'day' | 5 | ...
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我尝试根据time_type和time_count值获取整数:
CREATE OR REPLACE FUNCTION af_calculate_range(tt text,tc integer) RETURNS integer AS $$
SELECT tt, CASE tt WHEN 'day' THEN tc * 60 * 60
WHEN 'hour' THEN tc * 60
END
FROM watchers;
$$
LANGUAGE SQL;
SELECT af_calculate_range(time_type, time_count) FROM watchers
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但我收到错误:
ERROR: return type mismatch in function declared to …Run Code Online (Sandbox Code Playgroud) 我在iOS 10.3上安装了新的Xcode 8.3.
我的应用程序按预期在iOS上运行,突然Xcode无法在设备上运行应用程序并出现错误:
无法启动"我的应用"流程启动失败:未指定
它运行在模拟器和其他设备迷你垫(10.2)上
我写了创建split方法的扩展:
extension String {
func split(splitter: String) -> Array<String> {
return self.componentsSeparatedByString(splitter)
}
}
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所以在操场上我可以写:
var str = "Hello, playground"
if str.split(",").count > 1{
var out = str.split(",")[0]
println("output: \(out)") // output: Hello
}
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如何在Java中使用正则表达式,我需要做什么:
str.split("[ ]+")
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因为这种方式不起作用.
谢谢,
我有以下代码片段,通过使用块获取联系人:
if (&ABAddressBookCreateWithOptions != NULL) {
CFErrorRef error = nil;
addressBook = ABAddressBookCreateWithOptions(NULL, &error);
ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
dispatch_sync(dispatch_get_main_queue(), ^{
if (error) {
//...
} else if (!granted) {
//...
} else {
// access granted
//...
}
});
});
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它适用于两者7.1.2和8.1.3版本.
然而,当我试图改变dispatch_get_main_queue到dispatch_get_global_queue(QOS_CLASS_BACKGROUND, 0)它的工作原理上8.1.3却崩溃上7.1.2
if (&ABAddressBookCreateWithOptions != NULL) {
CFErrorRef error = nil;
addressBook = ABAddressBookCreateWithOptions(NULL, &error);
ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
dispatch_sync(dispatch_get_global_queue(QOS_CLASS_BACKGROUND, 0), ^{ …Run Code Online (Sandbox Code Playgroud) 我有Jenkins自动化服务器,通过ssh用户连接到我的机器snaggs.
我的机器有2个版本ruby:
/System/Library/Frameworks/ ..... /usr/bin/rubyruby与RVM一起安装的v2.3.3
在机器上,自动化使用一些命令运行一些Perl脚本.whoami来自詹金斯给出snaggs
当Perl脚本运行命令时gem env,输出为:
$ gem env
RubyGems Environment:
- RUBYGEMS VERSION: 2.0.14.1
- RUBY VERSION: 2.0.0 (2015-12-16 patchlevel 648) [universal.x86_64-darwin16]
- INSTALLATION DIRECTORY: /Library/Ruby/Gems/2.0.0
- RUBY EXECUTABLE: /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
- EXECUTABLE DIRECTORY: /usr/local/bin
- RUBYGEMS PLATFORMS:
- ruby
- universal-darwin-16
- GEM PATHS:
- /Library/Ruby/Gems/2.0.0
- /Users/snaggs/.gem/ruby/2.0.0
- /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/gems/2.0.0
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true …Run Code Online (Sandbox Code Playgroud) 我有一个简单的Perl脚本,该脚本使用位于另一个文件中的辅助函数common.pl:
#!/usr/bin/perl
use strict;
use warnings;
use Cwd 'abs_path';
use File::Basename qw( fileparse );
use File::Path qw( make_path );
use File::Spec;
require "common.pl"; # line 15
#...
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#!/usr/bin/perl
use strict;
use warnings;
sub getTimeLoggerHelper{
#....
}
1;
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在本地,一切运行良好,但是当我尝试通过ssh运行它时,出现错误:
Can't locate common.pl in @INC (@INC contains:
/Library/Perl/5.18/darwin-thread-multi-2level /Library/Perl/5.18
/Network/Library/Perl/5.18/darwin-thread-multi-2level
/Network/Library/Perl/5.18
/Library/Perl/Updates/5.18.2/darwin-thread-multi-2level
/Library/Perl/Updates/5.18.2
/System/Library/Perl/5.18/darwin-thread-multi-2level
/System/Library/Perl/5.18
/System/Library/Perl/Extras/5.18/darwin-thread-multi-2level
/System/Library/Perl/Extras/5.18 .) at /Users/snaggs/scripts/main.pl line 15.
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如果我登录到远程计算机并运行相同的脚本,则没有错误。
我也尝试转换common.pl为模块:
package Common;
use strict;
use warnings;
sub getTimeLoggerHelper{
#.... …Run Code Online (Sandbox Code Playgroud) 我尝试将新行添加到NSlog.
我跑:
NSLog(@"\n%@\r\n\r\n", json1);
NSLog(@"\n%@\r\n\r\n", json2);
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但是输出是:
2017-03-29 16:09:50 InAppTestAfApp2[312:33527]
{"attribution":"true"}
2017-03-29 16:09:50 InAppTestAfApp2[312:33527]
{"attribution":"false"}
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它忽略新行作为\r\n(也\n仅尝试过)但\n在字符串工作之前的第一个
我预计:
2017-03-29 16:09:50 InAppTestAfApp2[312:33527]
{"attribution":"true"}
2017-03-29 16:09:50 InAppTestAfApp2[312:33527]
{"attribution":"false"}
017-03-29 16:09:50 InAppTestAfApp2[312:33527] other logs ...
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我使用 Xcode 8.3
[编辑 1]
我试着跑:
NSLog(@"%@ %@",type, @"xxxxx\n\n");
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我仍然看到:
2017-03-29 16:09:50 InAppTestAfApp2[312:33527]
xxxxx
017-03-29 16:09:50 InAppTestAfApp2[312:33527] other logs ...
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[编辑 2]
作为解决方法,我在最后添加了垃圾,但看起来很乱:
NSLog(@"%@ %@\r\n\r\n%s",type, json, @"`");
Run Code Online (Sandbox Code Playgroud) 我有EventManager单Reg例类(Obj-C):
事件管理器
class EventManager : NSObject {
override init() {
super.init()
Reg.shared().id = myId
Reg.shared().delegate = self
}
}
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注册(单例)
@implementation Reg
//...
+(Reg*) shared{
static dispatch_once_t once;
static Reg *manager;
dispatch_once(&once, ^ { manager = [[Reg alloc] init]; });
return manager;
}
//...
@end
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这是我在控制器中的调用:
class ViewController: UIViewController {
let manager = EventManager()
override func viewDidLoad() {
super.viewDidLoad()
let a = SomeHandler.instance
}
DispatchQueue.global(qos: .default).async {
SomeHandler.instance.registerBlocks({ obj in
let m = EventManager()
}, failureBlock: …Run Code Online (Sandbox Code Playgroud)