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jQuery Ajax error handling, show custom exception messages
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This is still the correct way of doing this after 2 years and a half... :) I went a little further and actually return my own error JSON object that can handle single or multiple errors, quite good for server-side form validation.
– AlexCode
Ju...
How to generate all permutations of a list?
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Starting with Python 2.6 (and if you're on Python 3) you have a standard-library tool for this: itertools.permutations.
import itertools
list(itertools.permutations([1, 2, 3]))
If you're using an older Python (<2.6) for some reason or are just...
Convert datetime to Unix timestamp and convert it back in python
I have dt = datetime(2013,9,1,11) , and I would like to get a Unix timestamp of this datetime object.
11 Answers
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Fully custom validation error message with Rails
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Now, the accepted way to set the humanized names and custom error messages is to use locales.
# config/locales/en.yml
en:
activerecord:
attributes:
user:
email: "E-mail address"
errors:
models:
user:
attributes:
e...
How can I find all of the distinct file extensions in a folder hierarchy?
On a Linux machine I would like to traverse a folder hierarchy and get a list of all of the distinct file extensions within it.
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How do I do a not equal in Django queryset filtering?
In Django model QuerySets, I see that there is a __gt and __lt for comparitive values, but is there a __ne / != / <> ( not equals ?)
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How do you modify a CSS style in the code behind file for divs in ASP.NET?
... answered Mar 18 '09 at 6:29
Andy WhiteAndy White
79.1k4646 gold badges167167 silver badges204204 bronze badges
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Can I convert long to int?
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Just do (int)myLongValue. It'll do exactly what you want (discarding MSBs and taking LSBs) in unchecked context (which is the compiler default). It'll throw OverflowException in checked context if the value doesn't fit in an int:
int myIntValue = unchecked((int)myLongValue);
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How can I install a .ipa file to my iPhone simulator
...was downloaded via the iTunes store it was built for a different processor and won't work in the simulator.
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How do you mock out the file system in C# for unit testing?
...? In my current case I have methods that check whether certain file exists and read the creation date. I may need more than that in future.
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