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PHP validation/regex for URL

...for URLs, does anybody have one handy that works well? I didn't find one with the zend framework validation classes and have seen several implementations. ...
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What's the best practice for putting multiple projects in a git repository? [closed]

As some reason, I only have one repository to use. But I have multiple projects including java projects, php scripts and Android apps projects. ...
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What is Unicode, UTF-8, UTF-16?

... or UTF-16? I have researched this on Google and searched here as well but it's not clear to me. 9 Answers ...
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?

...task completion and just need them all to complete, should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?): ...
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Differences between Exception and Error

...ions are the bread and butter of exception handling. The Javadoc explains it well: An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch. Most such errors are abnormal conditions. Look at a few of the subclasses of Error,...
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difference between primary key and unique key

... Primary Key: There can only be one primary key in a table In some DBMS it cannot be NULL - e.g. MySQL adds NOT NULL Primary Key is a unique key identifier of the record Unique Key: Can be more than one unique key in one table Unique key can have NULL values It can be a candidate key Unique k...
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Calling Objective-C method from C++ member function?

... have a class ( EAGLView ) which calls a member function of a C++ class without problems. Now, the problem is that I need to call in that C++ class a objective-C function [context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer]; which I cannot do in C++ syntax....
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Handling colon in element ID with jQuery

We are not able to access the div element with ID "test: abc" in JS code using jQuery. 9 Answers ...
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Combining C++ and C - how does #ifdef __cplusplus work?

...m working on a project that has a lot of legacy C code. We've started writing in C++, with the intent to eventually convert the legacy code, as well. I'm a little confused about how the C and C++ interact. I understand that by wrapping the C code with extern "C" the C++ compiler will not ...
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How do you write multiline strings in Go?

... According to the language specification you can use a raw string literal, where the string is delimited by backticks instead of double quotes. `line 1 line 2 line 3` share | improve this ...