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When to use lambda, when to use Proc.new?

...ues on the next line return "Jason" end whowouldwin #=> "Jason" Now here's a Proc.new-created proc's return doing the same thing. You're about to see one of those cases where Ruby breaks the much-vaunted Principle of Least Surprise: def whowouldwin2 myproc = Proc.new {return "Freddy"}...
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Markdown and image alignment

...) ![my image](/img/myImage.jpg#center) Note the added URL hash #center. Now add this rule in CSS using CSS 3 attribute selectors to select images with a certain path. img[src*='#left'] { float: left; } img[src*='#right'] { float: right; } img[src*='#center'] { display: block; ma...
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Why doesn't the height of a container element increase if it contains floated elements?

...ce blank --> <div style="clear: both;"></div> <!-- Now in order to prevent the next div from floating beside the top ones, we use `clear: both;`. This is like a wall, so now none of the div's will be floated after this point. The container height will now also...
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REST API Best practices: Where to put parameters? [closed]

...ion identification, api keys, whatevs. Content - E.g. data to be stored. Now let's look at the different places where these parameters could go. Request headers & cookies URL query string ("GET" vars) URL paths Body query string/multipart ("POST" vars) Generally you want State to be set in...
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How fast is D compared to C++?

... @CyberShadow Thanks! With these flags runtime improves considerably. Now D is at 12.9 s. But still runs more than 3 times as long. @Matthieu M. I would not mind to test a program with boundschecking in slow motion and once it is debugged let it do its computations without boundschecking. (I do...
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How to convert timestamps to dates in Bash?

... @Bruno, how do you know date is faster than gawk.? – ghostdog74 Mar 3 '10 at 14:23 3 ...
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How do you work with an array of jQuery Deferreds?

...lice.call(arguments)); }); return deferred; } } Now you can simply pass in an array of deferreds/promises and get back an array of resolved/rejected objects in your callback, like so: $.when.all(promises).then(function(schemas) { console.log("DONE", this, schemas); /...
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When to use thread pool in C#? [closed]

...d tasks. Normally a pool consists of 2 threads per processor (so likely 4 nowadays), however you can set up the amount of threads you want, if you know how many you need. Edit: The reason to make your own threads is because of context changes, (thats when threads need to swap in and out of the pr...
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Faster way to develop and test print stylesheets (avoid print preview every time)?

This is my process right now: 10 Answers 10 ...
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Is the practice of returning a C++ reference variable evil?

...nt() { int* i = new int; return *i; // DON'T DO THIS. } Because now the client has to eventually do the strange: int& myInt = getInt(); // note the &, we cannot lose this reference! delete &myInt; // must delete...totally weird and evil int oops = getInt(); delete ...