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How do I syntax check a Bash script without running it?
...ind . -name '*.sh' -exec bash -n {} \;
If you want to use it for a single file, just edit the wildcard with the name of the file.
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Storyboard - refer to ViewController in AppDelegate
...-based app. I add a ViewController object to the storyboard, add the class files for this ViewController into the project and specify the name of the new class in the IB identity inspector. Now how am I going to refer to this ViewController programmatically from the AppDelegate? I've made a variable...
while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?
...ght", "credits" or "license" for more information.
>>> True = 4
File "<stdin>", line 1
SyntaxError: assignment to keyword
thus the interpreter can replace the while True: loop with an infinite loop.
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CSS Selector for
...ve been here for some time already. I guess it's time we clean up our .css files.
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How to convert a ruby hash object to JSON?
...
Add the following line on the top of your file
require 'json'
Then you can use:
car = {:make => "bmw", :year => "2003"}
car.to_json
Alternatively, you can use:
JSON.generate({:make => "bmw", :year => "2003"})
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How do I run multiple background commands in bash in a single line?
...ntially, there is a really simple method that works everywhere: Creating a file! The benefit of this method is that it's clean and simple.
First, create your file with a name, e.g. commands.sh. Then, put your commands there. Here's is a sample:
commands.sh:
#!/system/bin/sh
sleep 3;
sleep 2;
O...
How to interpret API documentation function parameters?
...persekretsyntaxdoc laying around anywhere, however there is a ~30 year old file for UNIX man page synposis format which is widespread use.
Some examples of this (and answering your question) would be :
Underlined words are considered literals, and are typed just as they appear.
Square brackets ( []...
Generate unique random numbers between 1 and 100
... This is how I always do it, too. So if I wanted ten random lines from a file with a bunch of lines in it, I do randlines file | head -10.
– tchrist
Sep 9 '12 at 19:38
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AsyncProcedures异步过程扩展 · App Inventor 2 中文网
... 示例2：文件操作
// 异步读取多个文件
when ReadFilesButton.Click
do
make global FileList from list "file1.txt", "file2.txt", "file3.txt"
call AsyncProcedures1.RunProcedureWithData ReadMultipleFiles FileList
// 异步读取文件过程
procedure ReadMultipleFiles ...
How to install python modules without root access?
...allation. If this problem repeats, you can setup a distutils configuration file, see http://docs.python.org/install/index.html#inst-config-files.
Setting the PYTHONPATH variable is described in tihos post.
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