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How to swap keys and values in a hash
...
files = {
'Input.txt' => 'Randy',
'Code.py' => 'Stan',
'Output.txt' => 'Randy'
}
h = Hash.new{|h,k| h[k] = []} # Create hash that defaults unknown keys to empty an empty list
files.map {|k,v| h[v]<< k} #...
What should I do if the current ASP.NET session is null?
... have also found that, when IIS is serving a direct request for a resource file which exists on disk, such as a style sheet, HttpContext.Current.Session can be null to code in `Application_AcquireRequestState'. The request for the page itself, however, does make the session object available to code ...
'parent.relativePath' points at my com.mycompany:MyProject instead of org.apache:apache - Why?
...ason (same maven version, same project code). Finally noticed a 'pom.xml' file right outside the project's folder, which was being picked up by maven.
– sudeep
Nov 28 '18 at 20:13
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Does Python support multithreading? Can it speed up execution time?
...ot create an exhaustive list, ever, but the rule-of-thumb is that any I/O (file reading and writing, network sockets, pipes) is handled in C, and a lot of C libraries also release the GIL for their operations, but it is up to the libraries to document this for you.
– Martijn Pi...
JavaScript OOP in NodeJS: how?
... want less "hacky", you should use inheritance library or such.
Well in a file animal.js you would write:
var method = Animal.prototype;
function Animal(age) {
this._age = age;
}
method.getAge = function() {
return this._age;
};
module.exports = Animal;
To use it in other file:
var A...
How can I make my custom objects Parcelable?
... For those who don't know where the Browse Repositories dialog is at: File > Settings... > Plugins and click on the Browse repositories... button.
– DaedalusAlpha
Oct 5 '16 at 12:35
...
Auto-fit TextView for Android
...e here at per android developer's request:
Final effect:
Sample Layout file:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp" >
<com.v...
Can an Option in a Select tag carry multiple values?
...achieved it by using the php explode function, like this:
HTML Form (in a file I named 'doublevalue.php':
<form name="car_form" method="post" action="doublevalue_action.php">
<select name="car" id="car">
<option value="">Select Car</option&g...
How do I exit a WPF application programmatically?
...to exit my application when the user clicks on the Exit menu item from the File menu.
16 Answers
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Configure Microsoft.AspNet.Identity to allow email address as username
...
Where exactly in the code (in which file / method) (in a default mvc5 app) should I put UserManager.UserValidator = new UserValidator<TUser>(UserManager) { AllowOnlyAlphanumericUserNames = false }? Thanks.
– PussInBoots
...