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How to check if a table contains an element in Lua?

... Perhaps also function keysOfSet(set) local ret={} for k,_ in pairs(set) do ret[#ret+1]=k end return ret end – Jesse Chisholm Apr 27 '18 at 21:40 add a comme...
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Why does C# forbid generic attribute types?

...pful information either, although it does provide an example of what's not allowed. My copy of the annotated C# 3 spec should arrive tomorrow... I'll see if that gives any more information. Anyway, it's definitely a language decision rather than a runtime one. EDIT: Answer from Eric Lippert (parap...
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Is it possible to use JavaScript to change the meta-tags of the page?

... @bobince: Actually, the SKYPE_TOOLBAR one still takes effect if you insert it with js (which is useful as html5 validator doesn't like that meta tag). – DaedalusFall Nov 15 '11 at 13:23 ...
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The term “Context” in programming? [closed]

...roviding your PIN number at the ATM). Either way, it's information that usually helps to get stuff done. Now let's say you take your $100 and buy a plane ticket to fly somewhere warm while your mouth heals. You arrive at a nice sunny destination, but your bag doesn't make it. It's lost somewhere i...
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Why can lambdas be better optimized by the compiler than plain functions?

...assing them to a function template will instantiate a new function specifically for that object. The compiler can thus trivially inline the lambda call. For functions, on the other hand, the old caveat applies: a function pointer gets passed to the function template, and compilers traditionally hav...
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Rails I18n validation deprecation warning

... the following line inside the Rails::Application body config.i18n.enforce_available_locales = true The possible values are: false: if you want to skip the locale validation don't care about locales true: if you want the application to raise an error if an invalid locale is passed (or) wan...
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What's the Linq to SQL equivalent to TOP or LIMIT/OFFSET?

... Technically, the questioner asked for Linq to SQL, so VB is a viable assumption. That said, ALassek, i'm a c# guy myself and prefer your answer. :-) – David Alpert Oct 10 '08 at 16:51 ...
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In android studio,cannot load 2 facets-unknown facet type:android and android-gradle

...nabled, so toggling the check-box sorted it) Not sure if my cause was installing Flutter, but I did have to disable the Flutter plugin before I could build again. share | improve this answer ...
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How to empty a list?

... This actually removes the contents from the list, but doesn't replace the old label with a new empty list: del lst[:] Here's an example: lst1 = [1, 2, 3] lst2 = lst1 del lst1[:] print(lst2) For the sake of completeness, the slic...
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Using “label for” on radio buttons

...ds like a clear case to use a checkbox instead :D – T_D Mar 13 at 15:16 Ah, no what I meant was one super-label that t...