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What are valid values for the id attribute in HTML?

...id certain characters. Periods, colons and '#' have special meaning in CSS selectors, so you will have to escape those characters using a backslash in CSS or a double backslash in a selector string passed to jQuery. Think about how often you will have to escape a character in your stylesheets or cod...
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Statistics: combinations in Python

...i Sorry for the confusion. The page displays a 404 if javascript has been (selectively) disabled. I guess that's to discourage rogue AIs from incorporating archived Google Code Project sources quite so easily? – SeldomNeedy Feb 29 '16 at 2:20 ...
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How to set input type date's default value to today?

...ing mobile. On Android 4.0.3 (at least) I've had issues where the new date selected via the popup date control is appended to todays date, rather than replaces it. E.g. you can end up with 2013-03-252013-03-27 rather than 2013-03-25, and there's no way for the user to change it. ...
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Reset C int array to zero : the fastest way?

... You can use memset, but only because our selection of types is restricted to integral types. In general case in C it makes sense to implement a macro #define ZERO_ANY(T, a, n) do{\ T *a_ = (a);\ size_t n_ = (n);\ for (; n_ > 0; --n_, ++a_)\ *a_ = ...
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Pick a random element from an array

...low Just to answer your question, you can do this to achieve random array selection: let array = ["Frodo", "sam", "wise", "gamgee"] let randomIndex = Int(arc4random_uniform(UInt32(array.count))) print(array[randomIndex]) The castings are ugly, but I believe they're required unless someone else h...
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Java's Interface and Haskell's type class: differences and similarities?

... class to other classes, define static methods and constructors that would select an implementation based on what return type is required in calling context, define methods that take arguments of the same type as the class implementing the interface, and various other things that don't really transl...
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What does cherry-picking a commit with Git mean?

... Also, what happens if the selected Commit (F in the example) has more than one immediate predecessor? – Thomas Bitonti Jul 25 '17 at 21:29 ...
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How to add calendar events in Android?

... I like this solution a lot. Mainly because it pushes the user to select his/her own calendar (if he has more than one). – Sebastian Roth Dec 3 '10 at 7:38 2 ...
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Setting up a deployment / build / CI cycle for PHP projects

...gh assumes a running instance of hudson located at http://localhost:8080 Select new Job (http://localhost:8080/view/All/newJob) from the menu on the left Give the job a name and tick Build a free-style software project on the list Pressing 'ok' will take you to the configuration page of the job. A...
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How to serialize SqlAlchemy result to JSON?

...oded before, it will encode it as 'None'. A recursive, possibly-circular, selective implementation Another alternative, probably better, is to be able to specify the fields you want to expand: def new_alchemy_encoder(revisit_self = False, fields_to_expand = []): _visited_objs = [] class ...