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Format string, integer with leading zeros

... the format string "img_%03d.jpg" to get decimal numbers with three digits and leading zeros. share | improve this answer | follow | ...
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Can I add comments to a pip requirements file?

...ust use # pip docs: A line that begins with # is treated as a comment and ignored. Whitespace followed by a # causes the # and the remainder of the line to be treated as a comment. share | imp...
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XPath: How to check if an attribute exists?

... Short and sweet: //*[@foo] Of course you should use a more specific expression. But with [@attributeName] you get all nodes which have that attribute. s...
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LINQ query to return a Dictionary

...ction of MyClass that I'd like to query using LINQ to get distinct values, and get back a Dictionary as the result, but I can't figure out how I can do it any simpler than I'm doing below. What would some cleaner code be that I can use to get the Dictionary as my result? ...
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How to find which rspec test is taking so long

One (or a couple) of our tests are taking forever and we'd like to optimize them. 1 Answer ...
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Available text color classes in Bootstrap

...ger. The bootstrap 4 documentation lists this under utilities -> color, and has more options: primary, secondary, success, danger, warning, info, light, dark, muted, white. To access them one uses the class text-[class-name] So, if I want the primary text color for example I would do something li...
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Rails Model find where not equal

...is is the only refactor you are going to make, it is not worth using a gem and I would just stick with what you got. Squeel is useful in situations where you have many complex queries interacting with Ruby code. share ...
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How do I delete/remove a shell function?

... A couple people have answered with: unset z but if you have a function and a variable named z only the variable will be unset, not the function. share | improve this answer | ...
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$routeParams doesn't work in resolve function

...arjs.org/api/ng.$routeParams are nice API when a route was already matched and changed. But it is true that it is a bit confusing... – pkozlowski.opensource Nov 17 '12 at 18:47 1 ...
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PHP regular expressions: No ending delimiter '^' found in

...n addition, if you're just validating, you don't need the capturing group, and can simplify the regex to /^\d+$/. Example: http://ideone.com/Ec3zh See also: PHP - Delimiters share | improve this a...