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What is the right way to check for a null string in Objective-C?
I was using this in my iPhone app
20 Answers
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How to download image from url
Is there a way to download an image directly from a url in c# if the url does not have an image format at the end of the link? Example of url:
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How to copy data to clipboard in C#
How can I copy a string (e.g "hello") to the System Clipboard in C#, so next time I press CTRL+V I'll get "hello"?
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Why does Math.round(0.49999999999999994) return 1?
In the following program you can see that each value slightly less than .5 is rounded down, except for 0.5 .
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How can I use PHP to dynamically publish an ical file to be read by Google Calendar?
Any Google search on PHP ical just brings up phpicalendar and how to parse or read IN ical files. I just want to write a PHP file that pulls events from my database and writes them out in ical format.
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Test whether string is a valid integer
I'm trying to do something common enough: Parse user input in a shell script. If the user provided a valid integer, the script does one thing, and if not valid, it does something else. Trouble is, I haven't found an easy (and reasonably elegant) way of doing this - I don't want to have to pick it ap...
How do I automatically sort a has_many relationship in Rails?
This seems like a really simple question but I haven't seen it answered anywhere.
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Postgres: “ERROR: cached plan must not change result type”
This exception is being thrown by the PostgreSQL 8.3.7 server to my application.
Does anyone know what this error means and what I can do about it?
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Font Awesome icon inside text input element
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You're right. :before and :after pseudo content is not intended to work on replaced content like img and input elements. Adding a wrapping element and declare a font-family is one of the possibilities, as is using a background image. O...
Are nested HTML comments possible?
as per the title; is it possible to have nested comments in valid HTML? see the example below...
10 Answers
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