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What is the best way to convert an array to a hash in Ruby

...nswer follows. Warning! Solutions using flatten will not preserve Array keys or values! Building on @John Topley's popular answer, let's try: a3 = [ ['apple', 1], ['banana', 2], [['orange','seedless'], 3] ] h3 = Hash[*a3.flatten] This throws an error: ArgumentError: odd number of arguments f...
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How can sbt pull dependency artifacts from git?

I've heard (and I know I've seen examples too, if only I can remember where) that sbt can obtain dependencies from a git repo. ...
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PHP's array_map including keys

Is there a way of doing something like this: 18 Answers 18 ...
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What does HTTP/1.1 302 mean exactly?

...1s instruct clients to forget the value of the original URL, while the 302 keeps the value of the original and can thus potentially reduce the value by creating two, logically-distinct URLs that each produce the same content (search engines view them as distinct duplicates rather than a single resou...
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datatrigger on enum to change image

I've got a button with a fixed background image and would like to show a small overlay image on top of it. Which overlay image to chose depends on a dependency property ( LapCounterPingStatus ) of the according viewmodel. ...
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Check if null Boolean is true results in exception

... answered Jun 12 '12 at 21:42 K-balloK-ballo 74.8k1919 gold badges140140 silver badges161161 bronze badges ...
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Resolve absolute path from relative path and/or file name

... argument by using %~f1, but this gives a path according to the current working directory, which is obviously not what you want. Personally, I often use the %~dp0%~1 idiom in my batch file, which interpret the first argument relative to the path of the executing batch. It does have a shortcoming t...
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Sequence contains no matching element

...ts. Given that you're testing for null immediately afterwards, it sounds like you want FirstOrDefault(), which returns the default value for the element type (which is null for reference types) if no matching items are found: var documentRow = _dsACL.Documents.FirstOrDefault(o => o.ID == id) O...
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What is the best way to exit a function (which has no return value) in python before the function en

...teration in which we call a function without a return value. The way I think my program should behave is explained in this pseudocode: ...
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Peak detection in a 2D array

...essure under a dogs paw. I use Python for my data analysis and now I'm stuck trying to divide the paws into (anatomical) subregions. ...