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Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.

... I also had this error, but could only fix it through the suggestion here. To summarize, use: 127.0.0.1 Instead of: localhost The reason is that "localhost" is a special name for the MySQL driver making it use the UNIX socket to connec...
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Could not load file or assembly or one of its dependencies

...dll (in my case NativeInterfaces.dll) You can see one or more dll with the error in red Error opening file... It means that this dll is missing in your system; in my case the dll name is MSVCR71.DLL You can download missings dll from google and copy in right path (in my case c:\windows\system32) A...
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Characters allowed in a URL

... – Jukka K. Korpela Mar 8 '13 at 15:05 4 And you can add list of unreserved A-Za-z0-9_.-~ and res...
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Working Soap client example

...close(); } catch (Exception e) { System.err.println("\nError occurred while sending SOAP Request to Server!\nMake sure you have the correct endpoint URL and SOAPAction!\n"); e.printStackTrace(); } } private static SOAPMessage createSOAPRequest(String ...
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How to prevent ifelse() from turning Date objects into numeric objects

...1:5], format: "2010-12-31" "2011-01-02" "2011-01-03" "2011-01-04" "2011-01-05" dplyr::if_else From dplyr 0.5.0 release notes: [if_else] have stricter semantics that ifelse(): the true and false arguments must be the same type. This gives a less surprising return type, and preserves S3 vectors lik...
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NSLog the method name with Objective-C in iPhone

... tl;dr NSLog( @"ERROR %@ METHOD %s:%d ", @"DescriptionGoesHere", __func__, __LINE__ ); Details Apple has a Technical Q&A page: QA1669 - How can I add context information - such as the current method or line number - to my logging stat...
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Defining private module functions in python

...ent call last): File "<stdin>", line 1, in <module> AttributeError: 'Foo' object has no attribute '__bar' >>> myFoo.PrintBar() # the class itself of course can access it 99 >>> dir(Foo) # yet can see it ['PrintBar', '_Foo__bar', '__class__', '__delattr__', '__dict...
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How to get the raw value an field?

...ill have invalid input. .valid is defined as the absence of any validation errors (E.g. mismatches, overflows, underflows), of which .badInput is only one kind of error. Note the chart above where .badInput is false, but the input is still invalid. – Ian Boyd S...
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How to properly assert that an exception gets raised in pytest?

...(): try: x = 1 / 0 assert False except ZeroDivisionError: assert True def test_fails_but_bad_style(): try: x = 1 / 1 assert False except ZeroDivisionError: assert True Output =========================================================...
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What's the difference between IEquatable and just overriding Object.Equals()?

...bj is not of type EntityBase, it will pass "null" and continue without any error or exception, But in case of "(EntityBase)obj", it will forcefully try to cast the obj to EntityBase and if the obj is not of type EntityBase, it will throw InvalidCastException. And yes, "as" can only be applied to ref...