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Number of occurrences of a character in a string [duplicate]
...:
int count = test.Split('&').Length - 1;
Or with LINQ:
test.Count(x => x == '&');
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HTML5 Canvas Resize (Downscale) Image High Quality?
...here is no point in talking about interpolation -which is about creating pixel-. The issue here is downsampling.
To downsample an image, we need to turn each square of p * p pixels in the original image into a single pixel in the destination image.
For performances reasons Browsers do a very s...
LINQPad [extension] methods [closed]
Does anyone have a complete list of LINQPad extension methods and methods, such as
4 Answers
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When should I really use noexcept?
The noexcept keyword can be appropriately applied to many function signatures, but I am unsure as to when I should consider using it in practice. Based on what I have read so far, the last-minute addition of noexcept seems to address some important issues that arise when move constructors throw....
How do I check if an element is really visible with JavaScript? [duplicate]
...point 2.
I see that no one has suggested to use document.elementFromPoint(x,y), to me it is the fastest way to test if an element is nested or hidden by another. You can pass the offsets of the targetted element to the function.
Here's PPK test page on elementFromPoint.
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Logical operators for boolean indexing in Pandas
I'm working with boolean index in Pandas.
The question is why the statement:
3 Answers
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pandas: filter rows of DataFrame with operator chaining
...etc), but the only way I've found to filter rows is via normal bracket indexing
14 Answers
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What is the __del__ method, How to call it?
...ave been deleted.
In a simple case this could be right after you say del x or, if x is a local variable, after the function ends. In particular, unless there are circular references, CPython (the standard Python implementation) will garbage collect immediately.
However, this is an implementation...
传感器组件 · App Inventor 2 中文网
...2)在三个维度上近似测量加速度。其组成部分是：
X分量：当手机静止在平坦表面上时为 0，当手机倾斜时为正向右（即左侧抬起），当手机倾斜到右侧时为负向左（即，其右侧尺寸升高）。
Y分量：当手机静止在平...
Installing libv8 gem on OS X 10.9+
I'm trying to install libv8 3.16.14.3 but getting an error on OSX Mavericks using latest stable rvm and ruby-1.9.3-p125.
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