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What's the maximum value for an int in PHP?
Ignoring the special libraries that allow you to work with very big numbers, what's the largest int value you can store in PHP?
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Format output string, right alignment
...t;12} {:>12}'.format(word[0], word[1], word[2])
And here's how to do it using the old % syntax (useful for older versions of Python that don't support str.format):
line_new = '%12s %12s %12s' % (word[0], word[1], word[2])
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How to trigger a file download when clicking an HTML button or JavaScript
... but I don't know how to do this, and because of how common the words are, it's hard to find what I need on search engines. I'm thinking this should be an easy one to answer.
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what happens when you type in a URL in browser [closed]
... more complex in actual use, and the tech stack has become an order of magnitude more complicated since this was written. With this in mind, the following timeline is still somewhat valid:
browser checks cache; if requested object is in cache and is fresh, skip to #9
browser asks OS for server's I...
sed command with -i option failing on Mac, but works on Linux
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The command (note the lack of space between -i and '' and the -e to make it work on new versions of Mac and on GNU):
sed -i'.original' -e 's/old_link/new_link/g' *
Create 2 backup files like:
File1.txt.original
File2.cfg.original
There is no portable way to avoid making backup files because ...
How can I represent an 'Enum' in Python?
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Enums have been added to Python 3.4 as described in PEP 435. It has also been backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4 on pypi.
For more advanced Enum techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3,...
Detect when browser receives file download
...have a page that allows the user to download a dynamically-generated file. It takes a long time to generate, so I'd like to show a "waiting" indicator. The problem is, I can't figure out how to detect when the browser has received the file, so I can hide the indicator.
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How can I pass a parameter to a Java Thread?
... parameter for later user
}
public void run() {
}
}
and invoke it thus:
Runnable r = new MyRunnable(param_value);
new Thread(r).start();
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Constructor in an Interface?
I know it's not possible to define a constructor in an interface. But I'm wondering why, because I think it could be very useful.
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Creating a “logical exclusive or” operator in Java
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Java does have a logical XOR operator, it is ^ (as in a ^ b).
Apart from that, you can't define new operators in Java.
Edit: Here's an example:
public static void main(String[] args) {
boolean[] all = { false, true };
for (boolean a : all) {
fo...