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Best way to handle list.index(might-not-exist) in python?

...? : li = [1,2,3,4,5] # create list li = dict(zip(li,range(len(li)))) # convert List To Dict print( li ) # {1: 0, 2: 1, 3: 2, 4:3 , 5: 4} li.get(20) # None li.get(1) # 0 share | improve this...
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Determine if map contains a value for a key?

... the map for a keyvalue that is '2'. IIRC the C++ compiler will implicitly convert '2' to an int, which results in the numeric value for the ASCII code for '2' which is not what you want. Since your keytype in this example is int you want to search like this: m.find(2); ...
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Making the iPhone vibrate

...rror for trying to cast from Int to UInt32, but the error reads as "Cannot convert to SystemSoundID", which is confusing. Why didn't apple just make it a Swift enum is beyond me. @aponomarenko's goes into the details, my answer is just for the Swifters out there. ...
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Cookie overflow in rails application?

... You've got a 4kb limit on what you can store in a cookie, and when Rails converts your object into text for writing to the cookie its probably bigger than that limit. Ruby on Rails ActionDispatch::Cookies::CookieOverflow error That way this CookieOverflow Error occurs. The easiest way to solve ...
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Capitalize words in string [duplicate]

...IE8 and Chrome), so a string like "località" would be wrongly capitalized converted into "LocalitÀ" (the à letter gets capitalized cause the regexp thinks it's a word boundary) A more general function that works also with accented letters is this one: String.prototype.toCapitalize = function() ...
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“The given path's format is not supported.”

...erver\share\path In this case, Resolve-Path returns an object that, when converted to a string, doesn't return a valid path. It returns PowerShell's internal path: > [string](Resolve-Path \\server\share\path) Microsoft.PowerShell.Core\FileSystem::\\server\share\path The solution is to use t...
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How to print from GitHub

... file.pdf Then print the resulting PDF file. There is also this online converter, which produced the nicest output for me: http://www.markdowntopdf.com/ Pandoc has an online demo as well. share | ...
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Sorting a list using Lambda/Linq to objects

... Sure. You can convert it to IQueryable. Didn't think about that. Updating my answer. – tvanfosson Apr 6 '09 at 19:59 ...
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How can I strip HTML tags from a string in ASP.NET?

...("XXS"); > / script < Will not be sanitized by the regex but converted by HtmlDecode to <script>alert("XXS");</ script> – user70568 Mar 14 '17 at 11:44 ...
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Easiest way to compare arrays in C#

...o(a2, StructuralComparisons.StructuralEqualityComparer)); Getting: cannot convert from 'System.Collections.IEqualityComparer' to 'System.Collections.IComparer' – shindigo Mar 21 '16 at 15:55 ...