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How to convert a ruby hash object to JSON?

...y, though). So, take a look here: car = {:make => "bmw", :year => "2003"} # => {:make=>"bmw", :year=>"2003"} car.to_json # NoMethodError: undefined method `to_json' for {:make=>"bmw", :year=>"2003"}:Hash # from (irb):11 # from /usr/bin/irb:12:in `<main>' require 'jso...
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What's the difference between using INDEX vs KEY in MySQL?

...3 nosnos 200k5151 gold badges364364 silver badges466466 bronze badges ...
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Get current date in milliseconds

... – Erik van der Neut Sep 10 '14 at 4:20 12 Note that CFAbsoluteTimeGetCurrent() returns the time r...
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R script line numbers at error?

...ming in R 2.10 and later. Duncan Murdoch just posted to r-devel on Sep 10 2009 about findLineNum and setBreapoint: I've just added a couple of functions to R-devel to help with debugging. findLineNum() finds which line of which function corresponds to a particular line of source code; setB...
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Is it possible to use getters/setters in interface definition?

... { readonly value: number; } let foo: Foo = { value: 10 }; foo.value = 20; //error class Bar implements Foo { get value() { return 10; } } but as far as I'm aware, and as others mentioned, there is no way currently to define a set-only property in the interface. You can, however, move...
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How to display full (non-truncated) dataframe information in html when converting from pandas datafr

...set_option('display.max_columns', None) pd.set_option('display.width', 2000) pd.set_option('display.float_format', '{:20,.2f}'.format) pd.set_option('display.max_colwidth', None) print(x) pd.reset_option('display.max_rows') pd.reset_option('display.max_columns') pd.reset_...
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What is the Linux equivalent to DOS pause?

...s. – Stephane Chazelas Jun 4 '14 at 20:33 2 Usually it's a better idea to ask for a specific key ...
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jQuery’s .bind() vs. .on()

... | edited Mar 24 '15 at 4:20 AntonK 2,13011 gold badge1616 silver badges2424 bronze badges answered Aug ...
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Initializing a static std::map in C++

...t need Boost. – Rahly May 31 '16 at 20:42  |  show 5 more comments ...
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How is the undo tree used in Vim?

... answered Jul 6 '09 at 20:09 Brian CarperBrian Carper 64.9k2525 gold badges154154 silver badges164164 bronze badges ...