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Subprocess changing directory
...ode tries to do is call a program named cd ... What you want is call a command named cd.
But cd is a shell internal. So you can only call it as
subprocess.call('cd ..', shell=True) # pointless code! See text below.
But it is pointless to do so. As no process can change another process's working ...
How to check file MIME type with javascript before upload?
...r = "";
for(var i = 0; i < arr.length; i++) {
header += arr[i].toString(16);
}
console.log(header);
// Check the file signature against known types
};
fileReader.readAsArrayBuffer(blob);
You can then determine the real MIME type like so (more file signatures here and here):
swit...
How to run a python script from IDLE interactive shell?
...
Can you please add an example with command line arguments as well.
– ViFI
Jul 18 '16 at 22:55
1
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Multi-line regex support in Vim
I notice the standard regex syntax for matching across multiple lines is to use /s, like so:
1 Answer
...
PHP server on local machine?
...d I'm wanting to test my PHP files without uploading them to my host. Basically testing them on my own machine before I upload them. How do I do that?
...
单页web应用（SPA）的简单介绍 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... main.innerHTML=data;
}
});
}
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参考原文链接：http://www.cnblogs.com/constantince/p/5586851.html
单页应用 SPA
Rotation methods deprecated, equivalent of 'didRotateFromInterfaceOrientation'?
... new viewWillTransitionToSize method which has been introduced in iOS 8 (all other rotation methods have been deprecated). I'd like to know what the equivalent of didRotateFromInterfaceOrientation is now as there are a number of clean up tasks we need to perform and I can't see a block that we c...
For files in directory, only echo filename (no path)
...earning more about parameter expansion: wiki.bash-hackers.org/syntax/pe#substring_removal
– DougW
Jan 26 '12 at 1:59
1
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Why are dashes preferred for CSS selectors / HTML attributes?
...re separated with underscore and there were no stops.
Also, using hyphens allows you to take advantage of the |= attribute selector, which selects any element containing the text, optionally followed by a dash:
span[class|="em"] { font-style: italic; }
This would make the following HTML elements...
Where does the .gitignore file belong?
...'s commonly used as a placeholder file in folders, since folders aren't usually tracked by git.
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