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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
... 【Socket】 ClientSocketAI2Ext 拓展加强版：TCP/IP传输协议
【FTP】 FTP 客户端拓展：FTP协议连接、上传、下载、创建、修改目录等
【短信平台接入】 AliSms 拓展：阿里云短信平台接入，短信验证码
【设备信息】 PhoneInfo 拓展：获取...
Abort makefile if variable not set
...I abort a make/makefile execution based on a makefile's variable not being set/valued?
5 Answers
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What Makes a Method Thread-safe? What are the rules?
...eparate thread
// could have changed its value between this thread setting its value at the start
// of the method and this line reading its value.
number = this.someValue.Length;
return number;
}
}
You should be aware that any parameters passed in to the metho...
Escape a dollar sign in string interpolation
... editor after snippets, if snippets enabled
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StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Git rebase fails, 'Your local changes to the following files would be overwritten by merge'. No loca
...ant to be safe, and then you probably don't need the core.trustctime false setting.
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Android gradle: buildtoolsVersion vs compileSdkVersion
... Just to be clear, in AS 3.2 the path to the above is "File=>Settings=>Appearance & Behavor ...."
– JL_SO
Oct 28 '18 at 15:03
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Import file size limit in PHPMyAdmin
...e - I checked php.ini in use via and I restarted the server. I changed the settings via Zend Server - checked the phpinfo again, and the changes are there - but no effect on the phpMyAdmin form - when trying to import data/structure with a SQL file, I'm still limited by the 2MB.
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MongoDB: Combine data from multiple collections into one..how?
...educe:
var mapUsers, mapComments, reduce;
db.users_comments.remove();
// setup sample data - wouldn't actually use this in production
db.users.remove();
db.comments.remove();
db.users.save({firstName:"Rich",lastName:"S",gender:"M",country:"CA",age:"18"});
db.users.save({firstName:"Rob",lastName:"M...
How can I suppress all output from a command using Bash?
...am outputs some status (doing this, doing that...). There isn't any option for this program to be quiet. How can I prevent the script from displaying anything?
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reformat in vim for a nice column layout
I have this dataset in a csv file
13 Answers
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