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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
... remove it!
– Milan
Feb 1 '17 at 22:32
add a comment
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How do you represent a graph in Haskell?
... haskell using algebraic data types. But how would you go about typographically representing a graph? It seems that you need to have pointers. I'm guessing you could have something like
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How can I remove 3 characters at the end of a string in php?
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callmebob
4,51355 gold badges2323 silver badges3737 bronze badges
answered Feb 6 '11 at 20:10
bensiubensiu
1...
How to parameterize @Scheduled(fixedDelay) with Spring 3.0 expression language?
...e assigned.
– ngeek
Apr 8 '10 at 18:32
Ah, that's right. So I guess you can't do it with the @Scheduled annotation the...
How to access java-classes in the default-package?
...u can’t use classes in the default package from a named package.
(Technically you can, as shown in Sharique Abdullah's answer through reflection API, but classes from the unnamed namespace are not in scope in an import declaration)
Prior to J2SE 1.4 you could import classes from the default packag...
runOnUiThread vs Looper.getMainLooper().post in Android
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Does Dispose still get called when exception is thrown inside of a using statement?
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edited May 23 '17 at 12:32
Community♦
111 silver badge
answered Feb 5 '09 at 22:54
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Finding the average of a list
... As a C++ programmer, that is neat as hell and float is not ugly at all!
– lahjaton_j
Apr 22 '16 at 12:33
If yo...
Heroku deployment error H10 (App crashed)
...cenes) this is a similar trick. Restarting will be implemented by stopping all dynos and starting them anew.
– Jochem Schulenklopper
Jan 18 '16 at 16:07
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How to get the last element of an array in Ruby?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...