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How to fix “ImportError: No module named …” error in Python?
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Do you have a file called __init__.py in the foo directory? If not then python won't recognise foo as a python package.
See the section on packages in the python tutorial for more information.
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Add new methods to a resource controller in Laravel
... to that method separately, before you register the resource:
Route::get('foo/bar', 'FooController@bar');
Route::resource('foo', 'FooController');
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How do I replace the *first instance* of a string in .NET?
...ample:
using System.Text.RegularExpressions;
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Regex regex = new Regex("foo");
string result = regex.Replace("foo1 foo2 foo3 foo4", "bar", 1);
// result = "bar1 foo2 foo3 foo4"
The third parameter, set to 1 in this case, is the number of occurrences of the regex pattern that you wa...
How to cast Object to its actual type?
...on
obj.GetType().GetMethod("MyFunction").Invoke(obj, null);
// interface
IFoo foo = (IFoo)obj; // where SomeType : IFoo and IFoo declares MyFunction
foo.MyFunction();
// dynamic
dynamic d = obj;
d.MyFunction();
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inline conditionals in angular.js
...rn input ? trueValue : falseValue;
};
});
and can be used like this:
{{foo == "bar" | iif : "it's true" : "no, it's not"}}
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How does type Dynamic work and how to use it?
...four different methods:
selectDynamic - allows to write field accessors: foo.bar
updateDynamic - allows to write field updates: foo.bar = 0
applyDynamic - allows to call methods with arguments: foo.bar(0)
applyDynamicNamed - allows to call methods with named arguments: foo.bar(f = 0)
To use one ...
Is it better to return null or empty collection?
...ut properties, always set your property once and forget it
public List<Foo> Foos {public get; private set;}
public Bar() { Foos = new List<Foo>(); }
In .NET 4.6.1, you can condense this quite a lot:
public List<Foo> Foos { get; } = new List<Foo>();
When talking about m...
GNU Makefile rule generating a few targets from a single source file
I am attempting to do the following. There is a program, call it foo-bin , that takes in a single input file and generates two output files. A dumb Makefile rule for this would be:
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Assert equals between 2 Lists in Junit
... values and nothing else, in order as stated in the javadoc.
Suppose a Foo class where you add elements and where you can get that.
A unit test of Foo that asserts that the two lists have the same content could look like :
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Tes...
Pass a JavaScript function as parameter
...s a function, just reference it by name without the parentheses:
function foo(x) {
alert(x);
}
function bar(func) {
func("Hello World!");
}
//alerts "Hello World!"
bar(foo);
But sometimes you might want to pass a function with arguments included, but not have it called until the callback...