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Xcode 4 - “Archive” is greyed out?
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Or you may find that if the iOS device is already selected the archive box isn’t selected when you choose “Edit Schemes” => “Build”.
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XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...est everything just by using the Notepad++ menu item, RUN, LAUNCH IN FIREFOX. That's a nice, easy way to start creating a web page, but when you start creating anything more than layout, css and simple page navigation, you need a local server set up on your machine.
Here are some options that I us...
What's the valid way to include an image with no src?
...ate with a src later with javascript but for ease I want the image tag to exist at pageload but just not display anything. I know <img src='' /> is invalid so what's the best way to do this?
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Using Moq to mock an asynchronous method for a unit test
...able to return different HttpStatusCodes for different tests based on the expected behavior coming back from the web API, and this seemed to give me more control.
– mvanella
Dec 31 '13 at 15:55
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Performance of Java matrix math libraries? [closed]
We are computing something whose runtime is bound by matrix operations. (Some details below if interested.) This experience prompted the following question:
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Why is the use of alloca() not considered good practice?
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The answer is right there in the man page (at least on Linux):
RETURN VALUE
The alloca() function returns a pointer to the beginning of the
allocated space. If the
allocation causes
stack overflow, program behaviour is undefined.
Which isn't to say i...
Is there a recommended way to return an image using ASP.NET Web API
What is the best way to return an image with 2 parameters (x and y for resize).
2 Answers
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Is a Java hashmap search really O(1)?
...g claims on SO re Java hashmaps and their O(1) lookup time. Can someone explain why this is so? Unless these hashmaps are vastly different from any of the hashing algorithms I was bought up on, there must always exist a dataset that contains collisions.
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PHP parse/syntax errors; and how to solve them
Everyone runs into syntax errors. Even experienced programmers make typos. For newcomers, it's just part of the learning process. However, it's often easy to interpret error messages such as:
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Access denied for user 'root'@'localhost' while attempting to grant privileges. How do I grant privi
...ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION |
| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION |
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2 rows in set (0.00 sec)
mysql> SELECT * FROM mysql.user WHERE User='root' and Host='loc...