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Is there documentation for the Rails column types?
...(names, emails, etc)
Text:
Unlimited length (depending on DBMS)
Use for comments, blog posts, etc. General rule of thumb: if it's captured via textarea, use Text. For input using textfields, use string.
Integer:
Whole numbers
Float:
Decimal numbers stored with floating point precision
Preci...
demystify Flask app.secret_key
...one would be able to break your encryption; it's like the password to your computer. The secret plus the data-to-sign are used to create a signature string, a hard-to-recreate value using a cryptographic hashing algorithm; only if you have the exact same secret and the original data can you recreate...
What's the point of map in Haskell, when there is fmap?
...
I would like to make an answer to draw attention to augustss's comment:
That's not actually how it happens. What happened was that the type of map was generalized to cover Functor in Haskell 1.3. I.e., in Haskell 1.3 fmap was called map. This change was then reverted in Haskell 1.4 a...
Accessing bash command line args $@ vs $*
In many SO questions and bash tutorials I see that I can access command line args in bash scripts in two ways:
5 Answers
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ReadOnlyCollection or IEnumerable for exposing member collections?
...lection?
It depends on how much you trust the calling code. If you're in complete control over everything that will ever call this member and you guarantee that no code will ever use:
ICollection<Foo> evil = (ICollection<Foo>) bar.Foos;
evil.Add(...);
then sure, no harm will be done...
CSS display:table-row does not expand when width is set to 100%
... means the markup/CSS in question does in fact not work as expected, so my comment above was wrong ;))
– user123444555621
Feb 9 '12 at 10:39
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node.js child process - difference between spawn & fork
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Spawn is a command designed to run system commands. When you run spawn, you send it a system command that will be run on its own process, but does not execute any further code within your node process. You can add listeners for the pr...
How do I start a process from C#?
...se the current process and avoid opening up another outlook? stackoverflow.com/questions/28534358/…
– user1166085
Feb 16 '15 at 7:09
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How exactly do Django content types work?
...mage = models.ImageField()
caption = models.TextField(blank=True)
class Comment(models.Model):
author = models.ForeignKey(User)
body = models.TextField(blank=True)
post = models.ForeignKey(Post)
picture = models.ForeignKey(Picture)
Okay, so we do have a way to theoretically create this ...
Generate random string/characters in JavaScript
I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9] .
77 Answers
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