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有返回值的过程代码块怎样执行代码块并返值？ - App Inventor 2 中文网 - ...
Q: 请教一下，这两个过程块一个有返回结果，一个没有返回结果。这两没法包含着用而且里面的插槽形状也不一样，我想知道如果定义一个过程函数时需要里面有执行块还有其它块最后返回结果，这个时候该咋办？
有返回结果...
想做一个类似自动精灵这种，能自动化操作手机的 app？ - 用户反馈 - 清泛IT...
Q：也就是想做一个类似自动精灵这种，能自动化操作手机的 app？
A：那的确 appinventor 目前没有这个能力，目前没有自己点屏幕的方案，操作手机层面需要的权限也很大，基本上实现不了的。
How do I execute a bash script in Terminal?
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The advice to cd anywhere at all perpetrates another common beginner misunderstanding. Unless the script internally has dependencies which require it to run in a particular directory (like, needing to read a data file which the script inexplicably doesn'...
How do I edit /etc/sudoers from a script?
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Old thread, but what about:
echo 'foobar ALL=(ALL:ALL) ALL' | sudo EDITOR='tee -a' visudo
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Is there a float input type in HTML5?
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(I'd also set min=0 if it can only be positive)
If you'd prefer to allow any number of decimal places, you can use step="any" (though for currencies, I'd recommend sticking to 0.01). In Chrome & Firefox, the stepper buttons will increment / decrement by 1 when using any. (thanks to Micha...
ADB not recognising Nexus 4 under Windows 7
I'm running on Windows 7, and I've updated all the drivers as it says on the Android developer website regarding using hardware devices. However, Eclipse is still not recognising my Nexus 4 when I try to run the application. The Android device chooser pops up, but it doesn't show anything on the h...
Difference between String replace() and replaceAll()
What's the difference between java.lang.String 's replace() and replaceAll() methods,
other than later uses regex? For simple substitutions like, replace . with / ,
is there any difference?
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Diff files present in two different directories
I have two directories with the same list of files. I need to compare all the files present in both the directories using the diff command. Is there a simple command line option to do it, or do I have to write a shell script to get the file listing and then iterate through them?
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rmagick gem install “Can't find Magick-config”
I get the error shown below when attempting to install the rmagick gem. I am on Snowleopard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I...
HttpClient not supporting PostAsJsonAsync method C#
I am trying to call a web API from my web application. I am using .Net 4.5 and while writing the code I am getting the error HttpClient does not contain a definition PostAsJsonAsync method.
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