remove

PHP: How to remove non-printable characters from strings

PHP FAQ: How do I remove all non-printable characters from a string in PHP?

I don’t know of any built-in PHP functions to remove all non-printable characters from a string, so the solution is to use the preg_replace function with an appropriate regular expression.

Scala: How to delete documents in a MongoDB with Casbah

This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 16.8, “How to delete documents in a MongoDB with Casbah.”

Problem

You want to delete one or more documents in a MongoDB collection.

Solution

Use the findAndRemove method of the Casbah MongoCollection class to delete one document at a time, or use the remove method to delete one or more documents at a time.

Scala: How to add, update, and remove elements with immutable Maps

This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 11.16, “How to Add, Update, and Remove Elements with Immutable Maps”

Problem

You want to add, update, or delete elements when working with an immutable map.

Solution

Use the correct operator for each purpose, remembering to assign the results to a new map.

To be clear about the approach, the following examples use an immutable map with a series of val variables. First, create an immutable map as a val:

Scala: How to add, update, and remove elements with a mutable Map

This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 11.15, “How to Add, Update, and Remove Elements with a Mutable Map”

Problem

You want to add, remove, or update elements in a mutable map.

Solution

Add elements to a mutable map by simply assigning them, or with the += method. Remove elements with -= or --=. Update elements by reassigning them.

Given a new, mutable Map:

Tell Git not to track a file any more (remove from repo)

Git rm FAQ: How do I tell Git not to track a file (or files) any more? That is, I want to remove the file from the Git repo?

While working on an application named "sarah" yesterday (named for the house known as "SARAH" in the tv series Eureka), I accidentally checked some files into Git that I didn't mean to. These were were primarily binary files in my project's "bin" and "target" directories.

jQuery - Create a textarea, insert text into a textarea

jQuery FAQ: How do you create a textarea using jQuery? Also, how do I insert content (text or HTML) into a textarea with jQuery?

I don't know if this will make any sense without showing my HTML, but I just used the following jQuery code to (a) get contents from a specific div tag, (b) add a textarea just before that div, (c) put the HTML contents into the new textarea, then (d) remove the original div. So, in essence, I created a new textarea with jQuery and inserted HTML into that textarea, but I got the HTML from my original div.

iPhone HTML app full screen mode - How to remove the URL and button bars

iPhone HTML web app FAQ: In an HTML web app optimized for the iPhone, how do I remove the URL bar on top of the iPhone Mobile Safari web browser so I can show my HTML app in full screen mode?

When you're creating an HTML/web app to look like a native iPhone app, one of the things you'll want to do is remove the URL bar in the Mobile Safari web browser. This is the URL bar on the top of the iPhone browser, and by getting rid of it, you can display your web app on the iPhone in full-screen mode.