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Should Gemfile.lock be included in .gitignore?

I'm sort of new to bundler and the files it generates. I have a copy of a git repo from GitHub that is being contributed to by many people so I was surprised to find that bundler created a file that didn't exist in the repo and wasn't in the .gitignore list. ...
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Is arr.__len__() the preferred way to get the length of an array in Python?

...5 The same works for tuples: my_tuple = (1,2,3,4,5) len(my_tuple) # 5 And strings, which are really just arrays of characters: my_string = 'hello world' len(my_string) # 11 It was intentionally done this way so that lists, tuples and other container types or iterables didn't all need to expl...
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How do you check if a variable is an array in JavaScript? [duplicate]

...n. variable.constructor === Array This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript engines. If you are having issues with finding out if an objects property is an array, you mus...
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What’s the best way to reload / refresh an iframe?

...yId('some_frame_id').location.reload(); The method that worked for both FF and Chrome was document.getElementById('iframeid').src = document.getElementById('iframeid').src – Mike Bevz Aug 11 '11 at 13:09 ...
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What is the ultimate postal code and zip regex?

I'm looking for the ultimate postal code and zip code regex. I'm looking for something that will cover most (hopefully all) of the world. ...
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Why does Math.floor return a double?

...seems inconsistent with the Math.Round functions, which do return int/long and handle the special cases in a different way. – zod May 11 '11 at 11:08 1 ...
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WPF: Setting the Width (and Height) as a Percentage Value

...nt="Stretch" ... That will make the Textbox element stretch horizontally and fill all the parent space horizontally (actually it depends on the parent panel you're using but should work for most cases). Percentages can only be used with grid cell values so another option is to create a grid and p...
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How do I access properties of a javascript object if I don't know the names?

...ke this: for (var key in data) { console.log(key); } This logs "Name" and "Value". If you have a more complex object type (not just a plain hash-like object, as in the original question), you'll want to only loop through keys that belong to the object itself, as opposed to keys on the object's...
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How to display line numbers in 'less' (GNU)

What is the command to make less display line numbers in the left column? 6 Answers ...
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GIT commit as different user without email / or only email

...s a different user, but i do not have a valid email address, following command is not working for me: 10 Answers ...