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How do I get a TextBox to only accept numeric input in WPF?

...ject.GetDataPresent(DataFormats.Text)) { string text = Convert.ToString(e.DataObject.GetData(DataFormats.Text)); if (!IsValid(text, true)) { e.CancelCommand(); } } else { e.CancelCommand(); ...
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Why can't I use float value as a template parameter?

... character pack template<char ...cs>, then the string literal can be converted into such a pack at compile time. Here is a demo on ideone. (Demo is C++14, but it's easy to port it back to C++11 - std::integer_sequence is the only difficulty) – Aaron McDaid ...
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ERROR: Error 1005: Can't create table (errno: 121)

...rch for these orphan tables with: SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME LIKE '%#sql%'; The version I was working with was 5.1, but the above command only works on versions >= 5.6 (manual is incorrect about it working for 5.5 or earlier, because INNODB_SYS_TABLES does no...
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How do you create different variable names while in a loop? [duplicate]

... Don't do this use a dictionary import sys this = sys.modules[__name__] # this is now your current namespace for x in range(0,9): setattr(this, 'string%s' % x, 'Hello') print string0 print string1 print string2 print string3 print string4 print string5 print ...
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Rank function in MySQL

...orresponding ANSI standard SQL query for my requirement. Please help me to convert it to MySQL . 11 Answers ...
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Convert array of strings into a string in Java

I want the Java code for converting an array of strings into an string. 13 Answers 13 ...
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Disable migrations when running unit tests in Django 1.7

...(self, item): return None TESTS_IN_PROGRESS = False if 'test' in sys.argv[1:] or 'jenkins' in sys.argv[1:]: logging.disable(logging.CRITICAL) PASSWORD_HASHERS = ( 'django.contrib.auth.hashers.MD5PasswordHasher', ) DEBUG = False TEMPLATE_DEBUG = False TESTS_I...
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In Functional Programming, what is a functor?

...fmap even is an overloaded function that can do many wonderful things: Convert a list of integers to a list of Booleans Convert a tree of integers to a tree of Booleans Convert Nothing to Nothing and Just 7 to Just False In Haskell, this property is expressed by giving the type of fmap: fmap ...
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Convert HH:MM:SS string to seconds only in javascript

I am having similar requirement as this: Convert time in HH:MM:SS format to seconds only? 13 Answers ...
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How can I read a whole file into a string variable

...ror to be reported. You will get a []byte instead of a string. It can be converted if really necessary: s := string(buf) share | improve this answer | follow ...