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Convert datetime to Unix timestamp and convert it back in python
... you need to either use a local (aware) epoch on both sides, or explicitly convert to and from UTC.
If you have, or can upgrade to, Python 3.3 or later, you can avoid all of these problems by just using the timestamp method instead of trying to figure out how to do it yourself. And even if you don'...
How to convert R Markdown to PDF?
I've previously asked about the commands for converting R Markdown to HTML .
8 Answers
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Converting pixels to dp
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// Converts 14 dip into its equivalent px
float dip = 14f;
Resources r = getResources();
float px = TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
dip,
r.getDisplayMetrics()
);
...
Can I use if (pointer) instead of if (pointer != NULL)?
...
You can; the null pointer is implicitly converted into boolean false while non-null pointers are converted into true. From the C++11 standard, section on Boolean Conversions:
A prvalue of arithmetic, unscoped enumeration, pointer, or pointer to member type can ...
Convert floats to ints in Pandas?
...eed them to be displayed as integers, or, without comma. Is there a way to convert them to integers or not display the comma?
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How do I convert an object to an array?
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Single-dimensional arrays
For converting single-dimension arrays, you can cast using (array) or there's get_object_vars, which Benoit mentioned in
his answer.
// Cast to an array
$array = (array) $object;
// get_object_vars
$array = get_object_vars(...
Set transparent background using ImageMagick and commandline prompt
...mageMagick 6.6.9-7 on Ubuntu 12.04.
What worked for me was the following:
convert test.png -transparent white transparent.png
That changed all the white in the test.png to transparent.
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iOS: Convert UTC NSDate to local Timezone
How do I convert a UTC NSDate to local timezone NSDate in Objective C or/and Swift?
13 Answers
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How do I convert uint to int in C#?
How do I convert uint to int in C#?
8 Answers
8
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ImageConvertor 扩展：免费图像转换器，支持JPG/PNG/WEBP格式转换和图像处...
... 搜索 ImageConvertor 扩展：免费图像转换器，支持JPG/PNG/WEBP格式转换和图像处理
ImageConvertor 扩展
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