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Regex how to match an optional character
I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not.
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Format number to 2 decimal places
I would like to know how can I output a number with 2 decimal places, without rounding the original number.
6 Answers
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How to add a new row to an empty numpy array
Using standard Python arrays, I can do the following:
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CSS 3 slide-in from left transition
Is there a cross browser solution to produce a slide-in transition with CSS only, no javascript? Below is an example of the html content:
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What's the point of OOP?
...sistency to the approaches that people take to modelling problem domains. All too often, the class is used simply for its syntactic sugar; it puts the functions for a record type into their own little namespace.
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Why would anyone use set instead of unordered_set?
...ss memory than unordered_set to store the same number of elements.
For a small number of elements, lookups in a set might be faster than lookups in an unordered_set.
Even though many operations are faster in the average case for unordered_set, they are often guaranteed to have better worst case comp...
Github (SSH) via public WIFI, port 22 blocked
I'm currently on a public WIFI spot and I'm unable to use SSH (they probably blocked that port). However, I need that connection to do a git push .
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to remove first and last element in array
...moves the last element from an array and returns only that element.
See all methods for an Array.
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Maintaining the final state at end of a CSS3 animation
I'm running an animation on some elements that are set to opacity: 0; in the CSS. The animation class is applied onClick, and, using keyframes, it changes the opacity from 0 to 1 (among other things).
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Why do indexes in XPath start with 1 and not 0?
Some colleagues and I were comparing past languages we had programmed in and were talking about our experience with VBScript with its odd features such as 1-based index instead of 0-based indexes like almost every other language has, the reasoning being that it was a language for users (e.g....