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Editing Javascript using Chrome Developer Tools

I am trying to edit javascript on a site using Chrome's Developer Tools. I have read about 30 accounts of how to do this as well as watched a few videos. The fact is, when I go to the sources tab and open the file I want to edit, I can't do anything to it. Is there some step I am missing? ...
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How can I get the last 7 characters of a PHP string?

... Use substr() with a negative number for the 2nd argument. $newstring = substr($dynamicstring, -7); From the php docs: string substr ( string $string , int $start [, int $length ] ) If start is negative, the returned string will start at the start'th char...
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Embedding SVG into ReactJS

Is is possible to embed SVG markup into a ReactJS component? 4 Answers 4 ...
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Left-pad printf with spaces

... If you want the word "Hello" to print in a column that's 40 characters wide, with spaces padding the left, use the following. char *ptr = "Hello"; printf("%40s\n", ptr); That will give you 35 spaces, then the word "Hello". This is how you format stuff when you know ho...
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MIN/MAX vs ORDER BY and LIMIT

Out of the following queries, which method would you consider the better one? What are your reasons (code efficiency, better maintainability, less WTFery)... ...
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Embedding Python in an iPhone app

So it's a new millennium; Apple has waved their hand; it's now legal to include a Python interpreter in an iPhone (App Store) app. ...
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Multiple columns index when using the declarative ORM extension of sqlalchemy

According to the documentation and the comments in the sqlalchemy.Column class, we should use the class sqlalchemy.schema.Index to specify an index that contains multiple columns. ...
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Is it possible to assign numeric value to an enum in Java?

Is anything like this possible in Java? Can one assign custom numeric values to enum elements in Java? 5 Answers ...
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Adding code to a javascript function programmatically

I'm attempting to customize an existing JS library without modifying the original JS code. This code loads in a few external JS files which I do have access to, and what I'd like to do is change one of the functions contained in the original file without copying and pasting the whole thing into the...
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Twitter Bootstrap: div in container with 100% height

Using twitter bootstrap (2), I have a simple page with a nav bar, and inside the container I want to add a div with 100% height (to the bottom of the screen). My css-fu is rusty, and I can't work this out. ...