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How do I automatically sort a has_many relationship in Rails?
...in the model?
– Wit
Jun 21 '17 at 8:05
@Wit - you can add .order() to the method chain, like in the last example. Is t...
A variable modified inside a while loop is not remembered
In the following program, if I set the variable $foo to the value 1 inside the first if statement, it works in the sense that its value is remembered after the if statement. However, when I set the same variable to the value 2 inside an if which is inside a while statement, it's forgotten af...
How many parameters are too many? [closed]
... You can define as many parameters as you may need, but too many of them will make your routine difficult to understand and maintain.
...
Does .NET have a way to check if List a contains all items in List b?
I have the following method:
4 Answers
4
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How to check a string for specific characters?
How can I check if a string has several specific characters in it using Python 2?
5 Answers
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?
...ainingUnsafe(final Throwable cause) {
return new RuntimeException("error while obtaining sun.misc.Unsafe", cause);
}
/**
* scenario: test that an CheckedException {@link MyException} can be thrown
* from an method that not declare it.
*/
@Test(expected = MyExcept...
How to detect if a script is being sourced
...ed.
If return is used in the top-level scope of a non-sourced script, an error message is emitted, and the exit code is set to 1.
(return 0 2>/dev/null) executes return in a subshell and suppresses the error message; afterwards the exit code indicates whether the script was sourced (0) or not ...
Vim: Move cursor to its last position
Is it possible in (g)Vim to move the cursor to its previous position (while in normal mode)? Something to cycle back and forth in the list of previous cursor positions would be ideal. But also just to switch to the last location would suffice (something like cd - in bash with directories).
...
How to create a static library with g++?
Can someone please tell me how to create a static library from a .cpp and a .hpp file? Do I need to create the .o and the .a? I would also like to know how can I compile a static library in and use it in other .cpp code. I have header.cpp , header.hpp . I would like to create header.a . Test the...
Looping through the content of a file in Bash
How do I iterate through each line of a text file with Bash ?
13 Answers
13
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