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Name of this month (Date.today.month as name)
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196
Date::MONTHNAMES[Date.today.month] would give you "January". (You may need to require 'date' f...
How to open multiple pull requests on GitHub
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116
Pull requests are based on a branch.
The only way to open up a pull request for multiple commi...
MySQL foreign key constraints, cascade delete
...-----+
| id | name | | id | name |
+----+------+ +----+---------+
| 1 | red | | 1 | mittens |
| 2 | blue | | 2 | boots |
+---++------+ +----+---------+
products_categories:
+------------+-------------+
| product_id | category_id |
+------------+-------------+
| 1 | 1 ...
How can I delete one element from an array by value
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15 Answers
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How do I print the elements of a C++ vector in GDB?
... in GDB:
(gdb) print myVector
This will produce an output similar to:
$1 = std::vector of length 3, capacity 4 = {10, 20, 30}
To achieve above, you need to have gdb 7 (I tested it on gdb 7.01) and some python pretty-printer. Installation process of these is described on gdb wiki.
What is more...
Latest jQuery version on Google's CDN
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182
UPDATE 7/3/2014: As of now, jquery-latest.js is no longer being updated.
From the jQuery blog:...
std::vector performance regression when enabling C++11
...nteresting performance regression in a small C++ snippet, when I enable C++11:
1 Answer
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Haskell: Where vs. Let
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1: The problem in the example
f :: State s a
f = State $ \x -> y
where y = ... x ...
is the parameter x. Things in the where clause can refer only to the parameters of the function f (there are none) and things in o...
Updating MySQL primary key
...update the primary key.
alter table xx drop primary key, add primary key(k1, k2, k3);
To fix things:
create table fixit (user_2, user_1, type, timestamp, n, primary key( user_2, user_1, type) );
lock table fixit write, user_interactions u write, user_interactions write;
insert into fixit
selec...
What is the difference between '/' and '//' when used for division?
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13 Answers
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