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What is the Linux equivalent to DOS pause?
...continue". Some keys don't send any character (like Ctrl...) and some send more than one (like F1, Home...). bash ignores NUL characters.
– Stephane Chazelas
Jun 4 '14 at 20:33
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What's the difference between belongs_to and has_one?
...s. We can say that a User "has" a Profile because the profiles table has a user_id column. If there was a column called profile_id on the users table, however, we would say that a Profile has a User, and the belongs_to/has_one locations would be swapped.
here is a more detailed explanation.
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NoSQL - MongoDB vs CouchDB [closed]
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If you are coming from the MySQL world, MongoDB is going to "feel" a lot more natural to you because of its query-like language support.
I think that is what makes it so friendly for a lot of people.
CouchDB is fantastic if you want to utilize the really great master-master replication support w...
sqlalchemy: how to join several tables by one query?
...om"
).all()
One note about that...
query.join(Address, User.id==Address.user_id) # explicit condition
query.join(User.addresses) # specify relationship from left to right
query.join(Address, User.addresses) # same, with explicit target
query.join('addresses') ...
Sanitizing strings to make them URL and filename safe?
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What does Python's eval() do?
...n a virtual machine to prevent malicious code from doing anything bad. Far more complicated than a simple eval. Also, eval is Python-specific. codepad supports a bunch of languages.
– FogleBird
Feb 21 '12 at 20:16
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How do you get a query string on Flask?
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How to replace a character by a newline in Vim
...in substitutions \n inserts a null character whereas \r inserts a newline (more precisely, it’s treated as the input CR). Here’s a small, non-interactive example to illustrate this, using the Vim command line feature (in other words, you can copy and paste the following into a terminal to run it...
What's the difference between identifying and non-identifying relationships?
... @Eugene, yes I would expect that to be a non-identifying relationship. user_id should be the primary key by itself, and updated_by is not part of a multi-column primary key.
– Bill Karwin
Jul 29 '11 at 14:18
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PHP exec() vs system() vs passthru()
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@Kalium: can you elaborate more on your statement? just stating some vague percentage statistics does not convince me. I believe that using system calls to execute scripts are totally fine as long as the whole application does not depend one a bunch of...