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Can you require two form fields to match with HTML5?
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The issues mentioned in the above comments can be addressed by: 1) Adding oninput="check(this)" to the first password field, and 2) changing input.value in the function to document.getElementById('password_confirm').value. So it becomes if (document.getElemen...
Difference between single and double square brackets in Bash
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Single [] are posix shell compliant condition tests.
Double [[]] are an extension to the standard [] and are supported by bash and other shells (e.g. zsh, ksh). They support extra operations (as well as the standard posix operations). For example: ||...
Best practices for large solutions in Visual Studio (2008) [closed]
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Thanks irperez for the comments
– Sayed Ibrahim Hashimi
Jun 9 '11 at 2:45
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Best algorithm for detecting cycles in a directed graph [closed]
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Tarjan's strongly connected components algorithm has O(|E| + |V|) time complexity.
For other algorithms, see Strongly connected components on Wikipedia.
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Avoiding instanceof in Java
...l. Sometimes it isn't even logically the right place to put the code. He recommends the 'instanceof' approach as being the lesser of several evils.
As with all cases where you are forced to write smelly code, keep it buttoned up in one method (or at most one class) so that the smell doesn't leak ou...
Is there any difference between a GUID and a UUID?
...er case characters and are case insensitive on input". This can lead to incompatibilities between code libraries (such as this).
(Original answer follows)
Treat them as a 16 byte (128 bits) value that is used as a unique value. In Microsoft-speak they are called GUIDs, but call them UUIDs when no...
What is the best method of handling currency/money?
...lly convert to and from BigDecimals everywhere, which will probably just become a pain.
As pointed out by mcl, to print the price, use:
number_to_currency(price, :unit => "€")
#=> €1,234.01
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In MySQL, can I copy one row to insert into the same table?
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How do I get a value of datetime.today() in Python that is “timezone aware”?
...alue of datetime.today() to calculate how long ago something was. But it complains:
19 Answers
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Why does “pip install” inside Python raise a SyntaxError?
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pip is run from the command line, not the Python interpreter. It is a program that installs modules, so you can use them from Python. Once you have installed the module, then you can open the Python shell and do import selenium.
The Python shel...