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What are the differences between ArrayList and Vector?

What are the differences between the two data structures ArrayList and Vector , and where should you use each of them? 7...
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Why does Python use 'magic methods'?

I've been playing around with Python recently, and one thing I'm finding a bit odd is the extensive use of 'magic methods', e.g. to make its length available, an object implements a method, def __len__(self) , and then it is called when you write len(obj) . ...
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What's the difference between git clone --mirror and git clone --bare

...es of the target, it maps all refs (including remote branches, notes etc.) and sets up a refspec configuration such that all these refs are overwritten by a git remote update in the target repository. My original answer also noted the differences between a bare clone and a normal (non-bare) clone ...
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What is an AngularJS directive?

I have spent quite a lot of time reading through AngularJS documentation and several tutorials, and I have been quite surprised at how unapproachable the documentation is. ...
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Why should I capitalize my SQL keywords? [duplicate]

... latter is more readable. You can easily separate the keywords from table and column names, etc. share | improve this answer | follow | ...
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在 App Inventor 2 中使用图像 · App Inventor 2 中文网

...ke: Failed to allocate a 25165836 byte allocation with 3395432 free bytes and 3MB until OOM What’s happening here is that the app is is running out of memory (OOM). In the case of the message above, the phone is trying to allocate 25 megabytes (25165836 bytes) but there are only 3 megabytes (33...
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What is the difference between HTTP and REST?

After reading a lot about the differences between REST and SOAP, I got the impression that REST is just another word for HTTP. Can someone explain what functionality REST adds to HTTP? ...
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Correct format specifier for double in printf

...e before printf receives it1. "%lf" is also acceptable under the current standard -- the l is specified as having no effect if followed by the f conversion specifier (among others). Note that this is one place that printf format strings differ substantially from scanf (and fscanf, etc.) format stri...
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Why are quaternions used for rotations?

I'm a physicist, and have been learning some programming, and have come across a lot of people using quaternions for rotations instead of writing things in matrix/vector form. ...
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Why do you have to link the math library in C?

... The functions in stdlib.h and stdio.h have implementations in libc.so (or libc.a for static linking), which is linked into your executable by default (as if -lc were specified). GCC can be instructed to avoid this automatic link with the -nostdlib or...