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How to check whether a string contains a substring in Ruby

...oMethodError: undefined method `include?' for nil:NilClass should always convert the value being included to the expected value:- test.to_s.include?("test") – Gary May 8 '18 at 21:24 ...
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Output data from all columns in a dataframe in pandas [duplicate]

...ly fit on a screen and does not look very well): print paramdata.values converts the dataframe to its numpy-array matrix representation. paramdata.columns stores the respective column names and paramdata.index stores the respective index (row names). ...
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What is the advantage of GCC's __builtin_expect in if else statements?

... Ohh i understand. So you mean since there is a high probability for x = 0 so the bar is given first. And foo, is defined later since it's chances (rather use probability) is less, right? – kingsmasher1 ...
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How to set thousands separator in Java?

How to set thousands separator in Java? I have String representation of a BigDecimal that I want to format with a thousands separator and return as String. ...
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How to get the mysql table columns data type?

...DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = 'tbl_name' AND COLUMN_NAME = 'col_name'; share | improve this answer | follow | ...
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Paste text on Android Emulator

... number) This works really well for links as the message is automatically converted into a hyperlink which you can click without having to copy / paste it into the browser. Once the emulator receives the message you can copy it and paste it wherever you like. ...
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How do I get the day of week given a date?

...ocumentation: Return the day of the week as an integer, where Monday is 0 and Sunday is 6. share | improve this answer | follow | ...
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What's a “static method” in C#?

...e class. A static class is a class which can only contain static members, and therefore cannot be instantiated. For example: class SomeClass { public int InstanceMethod() { return 1; } public static int StaticMethod() { return 42; } } In order to call InstanceMethod, you need an instanc...
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What is the best way to add options to a select from a JavaScript object with jQuery?

...u "touch the DOM" only one time. I'm not sure if the latest line can be converted into $('#mySelect').html(output.join('')) because I don't know jQuery internals (maybe it does some parsing in the html() method) share ...
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Arrays vs Vectors: Introductory Similarities and Differences [closed]

What are the differences between an array and a vector in C++? An example of the differences might be included libraries, symbolism, abilities, etc. ...