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How to save an HTML5 Canvas as an image on a server?
...you need:
Draw something (taken from canvas tutorial)
<canvas id="myCanvas" width="578" height="200"></canvas>
<script>
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
// begin custom shape
context.beginPath();
context.moveT...
How to add elements of a Java8 stream into an existing List
...his is a useful and effective technique for mutating existing collections. My answer addresses why you shouldn't use a Collector to mutate an existing collection.
The short answer is no, at least, not in general, you shouldn't use a Collector to modify an existing collection.
The reason is that co...
What's your most controversial programming opinion?
...em definition and design thoughts should preempt any decision to use it.
My 5 cents
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answered Jan 3 '09 at 11:04
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Converting array to list in Java
... @UsmanIsmail As of Java 8, we can use streams for this conversion. See my answer below.
– Ibrahim Arief
May 18 '15 at 11:59
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Java switch statement: Constant expression required, but it IS constant
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I got this error on Android, and my solution was just to use:
public static final int TAKE_PICTURE = 1;
instead of
public static int TAKE_PICTURE = 1;
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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...例非常简单，相关的类型只有typeid(int)。假如你有一个类my_exception，继承自std::exception。如果你的程序运行时抛出一个my_exception类型的对象，那么抛出的数据参数pCatchableTypeArray包含了两个重要子数据信息。一个是typeid(my_exception)...
How can I clear or empty a StringBuilder? [duplicate]
...gth(0), does that mean it keeps the internal buffer at its current length? My concern is that I don't want to new a new StringBuffer because I expect sometimes I will have fairly long strings, and thus I am starting with a pretty large buffer size (4k or 32k). So, it sounds like it might be quicker...
Passing an integer by reference in Python
... as you have in C. (They don't have to be dereferenced, for example). In my mental model, it's easier to think of things as "Names" and "Objects". Assignment binds a "Name"(s) on the left to an "Object"(s) on the right. When you call a function, you pass the "Object" (effectively binding it to a...
What's so bad about Template Haskell?
..., you can't say "No, I only want the database interface, thanks; I'll roll my own JSON interface"
Run time. TH code takes a relatively long time to run. The code is interpreted anew every time a file is compiled, and often, a ton of packages are required by the running TH code, that have to be loade...
Circle line-segment collision detection algorithm?
... is simply computed over the three elements (x,y,z) vectors. I will switch my code to this algorithm.
– chmike
Jul 10 '09 at 6:23
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