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Rails find_or_create_by more than one attribute?
...https://github.com/rails/rails/blob/4-2-stable/guides/source/active_record_querying.md
Example
GroupMember.find_or_create_by_member_id_and_group_id(4, 7)
became
GroupMember.find_or_create_by(member_id: 4, group_id: 7)
...
Correct way to remove plugin from Eclipse
...work for all plugins... Subclipse refuses to be removed: stackoverflow.com/questions/6070424/…
– marcolopes
Feb 6 '14 at 21:00
...
Differences between “BEGIN RSA PRIVATE KEY” and “BEGIN PRIVATE KEY”
...encoded data the following DER structure is present:
PrivateKeyInfo ::= SEQUENCE {
version Version,
algorithm AlgorithmIdentifier,
PrivateKey BIT STRING
}
AlgorithmIdentifier ::= SEQUENCE {
algorithm OBJECT IDENTIFIER,
parameters ANY DEFINED BY algorithm OPT...
What exactly does big Ө notation represent?
... clear that f(n) = 2*n is "worse" than f(n) = n. But the difference is not quite as drastic as it is from the other function. We can see that f(n)=logn quickly getting much lower than the other functions, and f(n) = n^2 is quickly getting much higher than the others.
So - because of the reasons abov...
PostgreSQL: How to change PostgreSQL user password?
How do I change the password for PostgreSQL user?
17 Answers
17
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Recent file history in Vim?
... files that I had opened and then closed in GVim. I open and close GVim frequently. I would like to access recent files from previous sessions as well.
...
Open a URL in a new tab (and not a new window)
... answered Feb 5 '11 at 15:53
QuentinQuentin
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...
NPM clean modules
... of the node_modules as well as the compiled output, so doesn't answer the question.
– theGecko
Dec 18 '12 at 20:42
If...
What is cURL in PHP?
...
cURL is a library that lets you make HTTP requests in PHP. Everything you need to know about it (and most other extensions) can be found in the PHP manual.
In order to use PHP's cURL functions
you need to install the » libcurl
package. PHP requires that you us...
Alphabet range in Python
...gt;> import string
>>> string.ascii_lowercase
'abcdefghijklmnopqrstuvwxyz'
If you really need a list:
>>> list(string.ascii_lowercase)
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
And to d...