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Assigning default value while creating migration file
...the generated file to add a column to a model Tweet with datatype integer. Now I want to add default value to the added column while generating the migration file. Is that possible? I googled it but couldn't find. Guys need help.
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Is it possible to make anonymous inner classes in Java static?
...'t recall having seen any obvious errors in the Java Glossary before. From now on, I take it with a grain of salt.
– Michael Myers♦
Apr 17 '09 at 15:17
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Is there anything like .NET's NotImplementedException in Java?
...his is better than the use of UnsupportedOperationException in my opinion. Now, if only Java would add this to the common library of exceptions!
– crush
Sep 5 '13 at 12:50
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How to access the ith column of a NumPy multidimensional array?
...,
[3, 4],
[5, 6]])
As you already know from other answers, to get it in the form of "row vector" (array of shape (3,)), you use slicing:
arr_c1_ref = arr[:, 1] # creates a reference to the 1st column of the arr
arr_c1_copy = arr[:, 1].copy() # creates a cop...
How to fix “containing working copy admin area is missing” in SVN?
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@MohammadArif, There are two "Robs" now
– Charles Clayton
Jun 12 '17 at 20:32
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show 1 more comment
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Test whether a list contains a specific value in Clojure
...t and safest solution, as it also handles falsy values like nil and false. Now why is this not part of clojure/core?
– Stian Soiland-Reyes
Apr 8 '14 at 9:03
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How does an underscore in front of a variable in a cocoa objective-c class work?
...ttributes have used an underscore _ in front of the variable. Does anyone know what this means? Or how it works?
9 Answers
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Static Classes In Java
...ollowing example.
public class A {
public static class B {
}
}
Now, inside a different class C, class B can be accessed without making an instance of class A.
public class C {
A.B ab = new A.B();
}
static classes can have non-static members too. Only the class gets static.
But if...
How do I get the entity that represents the current user in Symfony2?
I am using the Symfony security setup. Everything works fine, but I don't know how to do one important thing:
6 Answers
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Web Application Problems (web.config errors) HTTP 500.19 with IIS7.5 and ASP.NET v2
...JAX Extensions was the problem. I commented that section out since AJAX is now built into 3.5
– jdiaz
Dec 3 '09 at 3:09
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