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efficient circular buffer?
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206
I would use collections.deque with a maxlen arg
>>> import collections
>>> ...
Checking for the correct number of arguments
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218
#!/bin/sh
if [ "$#" -ne 1 ] || ! [ -d "$1" ]; then
echo "Usage: $0 DIRECTORY" >&2
e...
How can I get nth element from a list?
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Look here, the operator used is !!.
I.e. [1,2,3]!!1 gives you 2, since lists are 0-indexed.
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Generate a UUID on iOS from Swift
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edited Feb 23 at 10:34
Tilak Maddy
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Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...is returning an Integer object, which may have its values cached between -128 and 127. This is why the first value returns true - it's cached - and the second value returns false - 128 isn't a cached value, so you're getting two separate Integer instances.
It is important to note that you are comp...
How to verify a user's password in Devise
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269
I think this is a better, and more elegant way of doing it:
user = User.find_by_email(params[...
ASP.NET Repeater bind List
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214
Just use <%# Container.DataItem.ToString() %>
If you are worried about null values you ...
JavaScript ternary operator example with functions
...nary syntax in your question; I like the last one the best...
x = (1 < 2) ? true : false;
The use of ternary here is totally uncessesary - you could simply write
x = (1 < 2);
Likewise, the condition element of a ternary statement is always evaluated as a Boolean value, therefore you can ...
SQL DELETE with INNER JOIN
There are 2 tables, spawnlist and npc , and I need to delete data from spawnlsit .
npc_templateid = n.idTemplate is the only thing that "connect" the tables.
I have tried this script but it doesn't work.
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If string is empty then return some default value
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228
ActiveSupport adds a presence method to all objects that returns its receiver if present? (the...