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How to add two strings as if they were numbers? [duplicate]

I have two strings which contain only numbers: 20 Answers 20 ...
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MySQL get the date n days ago as a timestamp

... it appears (v1) DATE_SUB will return a DATETIME or STRING depending on inputs. TIMESTAMP (v2) is forcing it to a TIMESTAMP type. dev.mysql.com/doc/refman/5.1/en/… – jsh Apr 2 '14 at 18:39 ...
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How to search for a string in text files?

I want to check if a string is in a text file. If it is, do X. If it's not, do Y. However, this code always returns True for some reason. Can anyone see what is wrong? ...
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Remove the string on the beginning of an URL

I want to remove the " www. " part from the beginning of an URL string 8 Answers 8 ...
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Python - 'ascii' codec can't decode byte

... "你好".encode('utf-8') encode converts a unicode object to a string object. But here you have invoked it on a string object (because you don't have the u). So python has to convert the string to a unicode object first. So it does the equivalent of "你好".decode().encode('utf-8') B...
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How can I convert a stack trace to a string?

... the easiest way to convert the result of Throwable.getStackTrace() to a string that depicts the stacktrace? 31 Answers ...
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How to find all occurrences of a substring?

Python has string.find() and string.rfind() to get the index of a substring in a string. 20 Answers ...
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Check if a given Type is an Enum

...sonConverter for Json.NET which should allow me to convert any enum's to a string value defined by a [Description] attribute. ...
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AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?

...omedata). As you can see, this is not valid JSON. And, somedata can be a string, or a number, or whatever you want it to be. – Ray Nicholus Feb 14 '14 at 15:45 1 ...
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Dynamic LINQ OrderBy on IEnumerable / IQueryable

...n the VS2008 Examples for Dynamic LINQ that allows you to use a sql-like string (e.g. OrderBy("Name, Age DESC")) for ordering. Unfortunately, the method included only works on IQueryable<T> . Is there any way to get this functionality on IEnumerable<T> ? ...