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Landscape printing from HTML
...o be printed landscape because of the many columns. It there a way to do this, without the user having to change the document settings?
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What is a proper naming convention for MySQL FKs?
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In MySQL, there is no need to give a symbolic name to foreign key constraints. If a name is not given, InnoDB creates a unique name automatically.
In any case, this is the convention that I use:
fk_[referencing table name]_[referenced tabl...
How do I iterate through the files in a directory in Java?
I need to get a list of all the files in a directory, including files in all the sub-directories. What is the standard way to accomplish directory iteration with Java?
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What is the Swift equivalent of isEqualToString in Objective-C?
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With Swift you don't need anymore to check the equality with isEqualToString
You can now use ==
Example:
let x = "hello"
let y = "hello"
let isEqual = (x == y)
now isEqual is true.
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What's the best way to do a backwards loop in C/C#/C++?
I need to move backwards through an array, so I have code like this:
14 Answers
14
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How do you set, clear, and toggle a single bit?
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Setting a bit
Use the bitwise OR operator (|) to set a bit.
number |= 1UL << n;
That will set the nth bit of number. n should be zero, if you want to set the 1st bit and so on upto n-1, if you want to set the nth bit.
Use 1ULL if number is wide...
Exiting from python Command Line
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In my python interpreter exit is actually a string and not a function -- 'Use Ctrl-D (i.e. EOF) to exit.'. You can check on your interpreter by entering type(exit)
In active python what is happening is that exit is a function. If you do not call the func...
using href links inside tag
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<select name="forma" onchange="location = this.value;">
<option value="Home.php">Home</option>
<option value="Contact.php">Contact</option>
<option value="Sitemap.php">Sitemap</option>
</select>
UPDATE (Nov 2015): In th...
Check if all checkboxes are selected
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I think the easiest way is checking for this condition:
$('.abc:checked').length == $('.abc').length
You could do it every time a new checkbox is checked:
$(".abc").change(function(){
if ($('.abc:checked').length == $('.abc').length) {
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A non-blocking read on a subprocess.PIPE in Python
...). I want to be able to execute non-blocking reads on its standard output. Is there a way to make .readline non-blocking or to check if there is data on the stream before I invoke .readline ? I'd like this to be portable or at least work under Windows and Linux.
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