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Python append() vs. + operator on lists, why do these give different results?

...egral data types. Do not confuse arrays with lists. They are not the same. From the array docs: Arrays are sequence types and behave very much like lists, except that the type of objects stored in them is constrained. The type is specified at object creation time by using a type code, which is a sin...
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What is the difference between `let` and `var` in swift?

... names, including Unicode characters: let ???????? = "dogcow" Excerpts From: Apple Inc. “The Swift Programming Language.” iBooks. https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewBook?id=881256329 EDIT Because comments asking for adding other facts to the answer, converting this to c...
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What is the significance of ProjectTypeGuids tag in the visual studio project file

... From MZ-Tools: List of known project type Guids: Every Visual Studio project has a project type (Windows project, Smart Device project, Web Site project, etc.) and in some cases more than one type (subtypes or flavors). Eve...
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“register” keyword in C?

...it, the compiler is required to prevent the address of a register variable from being taken; this is the only mandatory effect of the register keyword. Even this is sufficient to improve optimizations, because it becomes trivial to tell that the variable can only be modified within this function. ...
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Elements order in a “for (… in …)” loop

..... is implementation dependent. However, specification is quite different from implementation. All modern implementations of ECMAScript iterate through object properties in the order in which they were defined. Because of this the Chrome team has deemed this to be a bug and will be fixing it. All ...
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Is there a way to give a specific file name when saving a file via cURL?

... > /path/to/local/file If you want to preserve the original file name from the remote server, use the -O option or its alias --remote-name. curl -O http://url.com/file.html Stores the output from the remote location in the current directory as file.html. ...
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How to convert an Stream into a byte[] in C#? [duplicate]

...Length]; //declare arraysize stream.Read(buf, 0, buf.Length); // read from stream to byte array share | improve this answer | follow | ...
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How to find indices of all occurrences of one string in another in JavaScript?

...ts array... Edit: adding link @Tim Down's answer uses the results object from RegExp.exec(), and all my Javascript resources gloss over its use (apart from giving you the matched string). So when he uses result.index, that's some sort of unnamed Match Object. In the MDC description of exec, they...
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'AND' vs '&&' as operator

...with the same precedence distinction so it wouldn't be sensible to deviate from this standard (however puzzling it might be for beginners) by making precedence equal in PHP. Not to mention the backward compatibility of tons of PHP applications. – Mladen Jablanović ...
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difference between foldLeft and reduceLeft in Scala

...e next value. reduceLeft on the other hand will first combine two values from the list and apply those to the closure. Next it will combine the rest of the values with the cumulative result. See: List(1,3,5).reduceLeft { (a, b) => println("a " + a + ", b " + b); a + b } If the list is empty ...