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How do I calculate the normal vector of a line segment?
...(y, -x) seems to be right, but why would one use dx and dy here. Moreover, based on slopes, m1 * m2 = -1 for right angle lines, hence dy' = dx' * (-dx/dy) and dx' = dy' * (-dy/dx), how come in your equation normal.x = x' = -dy?
– legends2k
Jan 25 '13 at 8:53
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In JavaScript, is returning out of a switch statement considered a better practice than using break?
...oo = "bar";
if(foo == "bar") {
return 0;
}
else {
return 100;
}
Based on this, the argument could be made that option one is better practice.
In short, there's no clear answer, so as long as your code adheres to a consistent, readable, maintainable standard - that is to say don't mix and...
What does “%.*s” mean in printf?
...ll terminator, for example a string which is input from any stream or file based source. Which is far more often the use case I have encountered, than merely print prettines.
– Conrad B
Oct 24 '18 at 8:04
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Should bower_components be gitignored?
...er-locker -g
or
yarn global add bower-locker
then generate lock file based on existing bower.json file by runing:
bower-locker lock
The original bower.json file will be re-named to bower-locker.bower.json
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On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi
...f you previously left that original instance of LoginActivity alive at the base of your stack. If, like many programmers, you chose to finish() that LoginActivity once the user has successfully logged in, then it's no longer on the base of the stack and the FLAG_ACTIVITY_CLEAR_TOP semantics do not a...
Regular expression to match URLs in Java
...EDIT: Code of Patterns from https://github.com/android/platform_frameworks_base/blob/master/core/java/android/util/Patterns.java :
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in co...
Best way to store date/time in mongodb
...goDB shell version: 2.4.9
connecting to: 10.0.1.223/test
Create your database by inserting items
> db.penguins.insert({"penguin": "skipper"})
> db.penguins.insert({"penguin": "kowalski"})
>
Lets make that database the one we are on now
> use penguins
switched to db penguins
Get ...
Get city name using geolocation
I managed to get the user's latitude and longitude using HTML-based geolocation.
11 Answers
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How do I do a 'git status' so it doesn't display untracked files without using .gitignore?
..., nothing show up, only untracked files shown
– Snow Bases
Jun 21 '18 at 2:34
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Align button at the bottom of div using CSS
...on:relative the button will be moved from its original position instead of based on the parent.
– Kokos
Jun 27 '17 at 13:18
1
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