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How to remove local (untracked) files from the current Git working tree
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git-clean - Remove untracked files from the working tree
Synopsis
git clean [-d] [-f] [-i] [-n] [-q] [-e <pattern>] [-x | -X] [--] <path>…
Description
Cleans the working tree by recursively re...
What is the difference between include and require in Ruby?
...at include
does in most other programming
languages: run another file. It also
tracks what you've required in the
past and won't require the same file
twice. To run another file without
this added functionality, you can use
the load method.
The include method takes all the
metho...
How exactly does the callstack work?
...operations of programming languages work and especially how they interact with the OS/CPU. I've probably read every answer in every stack/heap related thread here on Stack Overflow, and they are all brilliant. But there is still one thing that I didn't fully understand yet.
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String literals: Where do they go?
I am interested in where string literals get allocated/stored.
8 Answers
8
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What integer hash function are good that accepts an integer hash key?
...e order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest disadvantage of this hash function is that it preserves divisibility, so if your integers are all divisible by 2 or by 4 (which is no...
What is the difference between a schema and a table and a database?
...blike (or worse) question. But I've always viewed a schema as a table definition in a database. This is wrong or not entirely correct. I don't remember much from my database courses.
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Good MapReduce examples [closed]
...nk of any good examples other than the "how to count words in a long text with MapReduce" task. I found this wasn't the best example to give others an impression of how powerful this tool can be.
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Migration: Cannot add foreign key constraint
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Add it in two steps, and it's good to make it unsigned too:
public function up()
{
Schema::create('priorities', function($table) {
$table->increments('id', true);
$table->integer('user_id')->unsigned...
Pros and Cons of SQLite and Shared Preferences [closed]
What is the good mechanism to store information among SQLite database and Shared Preferences?
5 Answers
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Generating a random password in php
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Security warning: rand() is not a cryptographically secure pseudorandom number generator. Look elsewhere for generating a cryptographically secure pseudorandom string in PHP.
Try this (use strlen instead of count, because count ...