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Forced naming of parameters in Python
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File "<stdin>", line 1, in <module>
TypeError: foo() takes exactly 1 positional argument (2 given)
This can also be combined with **kwargs:
def foo(pos, *, forcenamed, **kwargs):
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Find value in an array
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I'm guessing that you're trying to find if a certain value exists inside the array, and if that's the case, you can use Array#include?(value):
a = [1,2,3,4,5]
a.include?(3) # => true
a.include?(9) # => false
If you mean something else, check the Ruby Array API
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Can a decorator of an instance method access the class?
... Thanks I think this is the route with which to go. Just one extra line of code for any class I'd want to use this decorator. Maybe I could use a custom metaclass and perform this same check during new...?
– Carl G
Mar 17 '10 at 0:29
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Check if property has attribute
...hat is the fastest way to determine if it contains a given attribute? For example:
8 Answers
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String comparison in bash. [[: not found
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$ sh myscript
you should try:
$ bash myscript
or, if the script is executable:
$ ./myscript
sh and bash are two different shells. While in the first case you are passing your script as an argument to the sh interpreter, in the second case you decide on the very first line which interpreter...
Get month name from number
... can see that calendar.month_name[3] would return March, and the array index of 0 is the empty string, so there's no need to worry about zero-indexing either.
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Remove ALL white spaces from text
... from my code. I want to add a class to an ID after getting another ID's text property. The problem with this, is the ID holding the text I need, contains gaps between the letters.
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Delete a key from a MongoDB document using Mongoose
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This has been fixed in Mongoose 2.X, so you can leave the collection out.
– staackuser2
Nov 13 '11 at 22:30
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Getting image dimensions without reading the entire file
... Func<BinaryReader, Size>>()
{
{ new byte[]{ 0x42, 0x4D }, DecodeBitmap},
{ new byte[]{ 0x47, 0x49, 0x46, 0x38, 0x37, 0x61 }, DecodeGif },
{ new byte[]{ 0x47, 0x49, 0x46, 0x38, 0x39, 0x61 }, DecodeGif },
{ new byte[]{ 0x89, 0x50, 0x4E,...
How to sort a list in Scala by two fields?
how to sort a list in Scala by two fields, in this example I will sort by lastName and firstName?
4 Answers
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