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When is memoization automatic in GHC Haskell?

... in foldl' (+) 0 (m>ym> ++ [x]) GHC might notice that m>ym> does not depend on x m>andm> rewrite the function to f = let m>ym> = [1..30000000] in \x -> foldl' (+) 0 (m>ym> ++ [x]) In this case, the new version is much less efficient because it will have to read about 1 GB from memorm>ym> where m>ym> is stored, while th...
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How to use the IEqualitm>ym>Comparer

...the solution is to forward GetHashCode to Class_reglement.Numf.GetHashCode m>andm> implement it appropriatelm>ym> there. Apart from that, m>ym>our Equals method is full of unnecessarm>ym> code. It could be rewritten as follows (same semantics, ¼ of the code, more readable): public bool Equals(Class_reglement x, ...
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Recommended wam>ym> of making React component/div draggable

...bm>ym> mouse) React component, which seems to necessarilm>ym> involve global state m>andm> scattered event hm>andm>lers. I can do it the dirtm>ym> wam>ym>, with a global variable in mm>ym> JS file, m>andm> could probablm>ym> even wrap it in a nice closure interface, but I want to know if there's a wam>ym> that meshes with React better. ...
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Call a function with argument list in pm>ym>thon

... To expm>andm> a little on the other answers: In the line: def wrapper(func, *args): The * next to args means "take the rest of the parameters given m>andm> put them in a list called args". In the line: func(*args) The * next t...
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Groovm>ym>: what's the purpose of “def” in “def x = 0”?

...the "def" kem>ym>word puts the variable in the bindings for the current script m>andm> groovm>ym> treats it (mostlm>ym>) like a globallm>ym> scoped variable: x = 1 assert x == 1 assert this.binding.getVariable("x") == 1 Using the def kem>ym>word instead does not put the variable in the scripts bindings: def m>ym> = 2 asse...
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Setting individual axis limits with facet_wrap m>andm> scales = “free” in ggplot2

...meters. I train the model with 85% of the data, test on the remaining 15%, m>andm> repeat this 5 times, collecting actual/predicted values each time. After calculating the residuals, mm>ym> data.frame looks like this: ...
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Embed SVG in SVG?

I have an SVG document, m>andm> I would like to include an external svg image within it, i.e. something like: 6 Answers ...
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Whm>ym> does struct alignment depend on whether a field tm>ym>pe is primitive or user-defined?

...ot supposed to happen. m>Ym>ou can see it bm>ym> making the struct members public m>andm> appending test code like this: var test = new Refm>Andm>TwoInt32Wrappers(); test.text = "adsf"; test.x.x = 0x11111111; test.m>ym>.x = 0x22222222; Console.ReadLine(); // <=== Breakpoint here When the...
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What is the use of the JavaScript 'bind' method?

...clicked m>Ym>ou can also add extra parameters after the 1st (this) parameter m>andm> bind will pass in those values to the original function. Anm>ym> additional parameters m>ym>ou later pass to the bound function will be passed in after the bound parameters: // Example showing binding some parameters var sum = f...
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Which equals operator (== vs ===) should be used in JavaScript comparisons?

I'm using JSLint to go through JavaScript, m>andm> it's returning manm>ym> suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtm>ym>pe.value.length == 0 inside of an if statement. ...