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Waiting until two async blocks are executed before starting another block

... NSLog(@"Block3"); }); // only for non-ARC projects, handled automatically in ARC-enabled projects. dispatch_release(group); and could produce output like this: 2012-08-11 16:10:18.049 Dispatch[11858:1e03] Block1 2012-08-11 16:10:18.052 Dispatch[11858:1d03] Block2 2012-08-11 16:10:23.051 Dis...
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Java URL encoding of query string parameters

... are represented by +, not %20, which is legitimately valid. The %20 is usually to be used to represent spaces in URI itself (the part before the URI-query string separator character ?), not in query string (the part after ?). Also note that there are three encode() methods. One without Charset as s...
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Replacing all non-alphanumeric characters with empty strings

... Use [^A-Za-z0-9]. Note: removed the space since that is not typically considered alphanumeric. share | improve this answer | follow | ...
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How to get all selected values from ?

...ipt as many people do not use JQuery in their sites. From RobG How to get all selected values of a multiple select box using JavaScript?: function getSelectValues(select) { var result = []; var options = select && select.options; var opt; for (var i=0, iLen=options.length; i<...
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How can I remove all my changes in my SVN working directory?

...ctory, and it shows in svn status . But is there any way for me to remove all my changes in there and just get everything from the trunk using the command line? ...
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Stack, Static, and Heap in C++

...t understood very well these three concepts. When do I have to use dynamic allocation (in the heap) and what's its real advantage? What are the problems of static and stack? Could I write an entire application without allocating variables in the heap? ...
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Significance of -pthread flag when compiling

...plied to both the compiling and linking stage while others don't use it at all and just pass -lpthread to the linking stage. ...
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What is the difference between the OAuth Authorization Code and Implicit workflows? When to use each

... The access_token is what you need to call a protected resource (an API). In the Authorization Code flow there are 2 steps to get it: User must authenticate and returns a code to the API consumer (called the "Client"). The "client" of the API (usually your web s...
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Download File Using Javascript/jQuery

... A webpage cannot open a new tab automatically. To force the browser to download, get the server to send the pdf file with a nonsense MIME-type, such as application/x-please-download-me – Randy the Dev Sep 20 '10 at 7:55 ...
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How do I autoindent in Netbeans?

In eclipse you can click Ctrl + I at any line, and it'll automatically indent the line or group of lines according to the indentation scheme you chose in the settings. ...