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classical inheritance vs prototypal inheritance in javascript
... to model classes:
function CLASS(base, body) {
if (arguments.length < 2) body = base, base = Object.prototype;
var prototype = Object.create(base, {new: {value: create}});
return body.call(prototype, base), prototype;
function create() {
var self = Object.create(prototy...
How to assign string to bytes array
...
For converting from a string to a byte slice, string -> []byte:
[]byte(str)
For converting an array to a slice, [20]byte -> []byte:
arr[:]
For copying a string to an array, string -> [20]byte:
copy(arr[:], str)
Same as above, but explicitly converting the string...
How to avoid 'cannot read property of undefined' errors?
...(e) {
return defaultVal;
}
}
// use it like this
getSafe(() => obj.a.lot.of.properties);
// or add an optional default value
getSafe(() => obj.a.lot.of.properties, 'nothing');
Working snippet:
function getSafe(fn, defaultVal) {
try {
return fn();
} catch (e) {
...
Centering controls within a form in .NET (Winforms)? [duplicate]
...ing (if you do care, go with Mitch Wheats solution):
Select the control -> Format (menu option) -> Center in Window -> Horizontally or Vertically
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Jar Mismatch Found 2 versions of android-support-v4.jar in the dependency list
...ing these solutions and problem persists. Then
GO to project folder -> libs-> and delete "android-support-v4.jar"
Hoping it would solve your problem as it solved my problem.
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Source unreachable when using the NuGet Package Manager Console
...a specific file that should be the same as the sources listed under TOOLS >> OPTIONS. But if you uncomment or add PackageSource items to that ItemGroup the solution will search the package sources listed and ONLY the ones listed.
...
Why use Dijkstra's Algorithm if Breadth First Search (BFS) can do the same thing faster?
...tween all nodes, then BFS is the better choice.
For example, consider A -> (B, C) -> (F) with edge weights given by A->B = 10, A->C = 20, B->F = C->F = 5.
Here, if we apply BFS, the answer will be ABF or ACF, as both are shortest paths (with respect to the number of edges), but i...
IntelliJ IDEA: Move line?
...
Open Setings -> Keymap then search for "move line" via the upper right searchbox.
Under the Code folder you'll see:
Move Statement Down
Move Statement Up
Move Line Down
Move Line Up
The actions you're looking for are (as you may gue...
Best way to assert for numpy.array equality?
...ould use:
numpy.allclose(arr1, arr2)
but it's not quite the same.
An alternative, almost the same as your example is:
numpy.alltrue(arr1 == arr2)
Note that scipy.array is actually a reference numpy.array. That makes it easier to find the documentation.
...
Environment variables for java installation
...
In Windows 7, right-click on Computer -> Properties -> Advanced system settings; then in the Advanced tab, click Environment Variables... -> System variables -> New....
Give the new system variable the name JAVA_HOME and the value C:\Program Files\Java...