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How to check whether an array is empty using PHP?
players will either be empty or a comma separated list (or a single value). What is the easiest way to check if it's empty? I'm assuming I can do so as soon as I fetch the $gameresult array into $gamerow ? In this case it would probably be more efficient to skip exploding the $playerlist if it...
What is the difference between -viewWillAppear: and -viewDidAppear:?
What is the difference between -[UIViewController viewWillAppear:] and -[UIViewController viewDidAppear:] ?
12 Answers
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SparseArray vs HashMap
I can think of several reasons why HashMap s with integer keys are much better than SparseArray s:
7 Answers
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How to check if an app is installed from a web-page on an iPhone?
I want to create a web-page, a page that will redirect an iPhone to the app-store if the iPhone does not have the application installed, but if the iPhone has the app installed I want it to open the application.
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Expansion of variables inside single quotes in a command in Bash
I want to run a command from a bash script which has single quotes and some other commands inside the single quotes and a variable.
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What is the difference between and ?
What is the difference between <section> and <div> in HTML ? Aren't we defining sections in both cases?
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Primary key or Unique index?
At work we have a big database with unique indexes instead of primary keys and all works fine.
15 Answers
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How can I be notified when an element is added to the page?
I want a function of my choosing to run when a DOM element is added to the page. This is in the context of a browser extension, so the webpage runs independently of me and I cannot modify its source. What are my options here?
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Comma in C/C++ macro
Say we have a macro like this
7 Answers
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Send a pull request on GitHub for only latest commit
I forked a project on github and am successfully making changes to my local master and pushing to origin on github. I want to send a pull request, but only want to include the last commit. The pull request UI on github.com shows the last 9 commits and I don't know how to filter that down.
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