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Make column not nullable in a Laravel migration
...r Otwell (creator of Laravel) said 6 days ago (2014-05-09): "I still stand by my statement that if anyone can successfully and cleanly do it I will merge it." github.com/laravel/framework/issues/895#issuecomment-42709756
– Ryan
May 15 '14 at 21:30
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dyld: Library not loaded: /usr/local/lib/libpng16.16.dylib with anything php related
...98-2013 Zend Technologies
with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans
1) Mac OS X equivalent of locate
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App restarts rather than resumes
...
The behavior you are experiencing is caused by an issue that exists in some Android launchers since API 1. You can find details about the bug as well as possible solutions here: https://code.google.com/p/android/issues/detail?id=2373.
It's a relatively common issue o...
Is null reference possible?
...create such a reference would be to
bind it to the “object” obtained by
dereferencing a null pointer, which
causes undefined behavior. As
described in 9.6, a reference cannot
be bound directly to a bit-field. ]
1.9/4:
Certain other operations are described
in this International...
“ValueError: zero length field name in format” error in Python 3.0,3.1,3.2
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I'm gonna guess that you are running python 2.6 by accident somehow.
This feature is only available for at least 3.1 if you are using python 3, or 2.7 if you are using python 2.
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Comparing Haskell's Snap and Yesod web frameworks
...ap, and xmlhtml. snap-server is a web server that exposes the API defined by snap-core. heist is a templating system. xmlhtml is an XML/HTML parsing and rendering library used by heist. snap is an umbrella project that glues them all together and provides the powerful snaplets API that makes web...
Select rows of a matrix that meet a condition
...y will not.
To perform the operation on a matrix, you can define a column by name:
m[m[, "three"] == 11,]
Or by number:
m[m[,3] == 11,]
Note that if only one row matches, the result is an integer vector, not a matrix.
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How can I obtain an 'unbalanced' grid of ggplots?
...rrange multiple ggplot figures in a grid to achieve a multi-panel figure by using something like:
4 Answers
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How to manually expand a special variable (ex: ~ tilde) in bash
...(but please don't use this)
If I'm not mistaken, "~" will not be expanded by a bash script in that manner because it is treated as a literal string "~". You can force expansion via eval like this.
#!/bin/bash
homedir=~
eval homedir=$homedir
echo $homedir # prints home path
Alternatively, just u...
Can anyone explain IEnumerable and IEnumerator to me? [closed]
...numerator();
while (bat.MoveNext())
{
bar = (Foo)bat.Current
...
}
By "functionally equivalent," I mean that's actually what the compiler turns the code into. You can't use foreach on baz in this example unless baz implements IEnumerable.
IEnumerable means that baz implements the method
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