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Pointer arithmetic for void pointer in C
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Final conclusion: arithmetic on a void* is illegal in both C and C++.
GCC allows it as an extension, see Arithmetic on void- and Function-Pointers (note that this section is part of the "C Extensions" chapter of the manual). Clang and ICC likely allow void* arithmetic for the purpose...
How to create a project from existing source in Eclipse and then find it?
...your workspace or it can be somewhere else.
Start a new project in eclipse and name it using that same project name.
Uncheck the "use default location" box and find the directory where your project is unless your project is already in the workspace - then you must not uncheck the "use default locati...
Parsing JSON with Unix tools
...ls specifically designed for the purpose of manipulating JSON from the command line, and will be a lot easier and more reliable than doing it with Awk, such as jq:
curl -s 'https://api.github.com/users/lambda' | jq -r '.name'
You can also do this with tools that are likely already installed on yo...
Set transparent background using ImageMagick and commandline prompt
Suppose you have any image (PNG or JPG).
This image has a white background and I need to make this background transparent.
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Jasmine JavaScript Testing - toBe vs toEqual
....g. numbers, booleans, strings, etc.), there is no difference between toBe and toEqual; either one will work for 5, true, or "the cake is a lie".
To understand the difference between toBe and toEqual, let's imagine three objects.
var a = { bar: 'baz' },
b = { foo: a },
c = { foo: a };
Using...
How to get the ThreadPoolExecutor to increase threads to max before queueing?
... this limitation in ThreadPoolExecutor where the queue needs to be bounded and full before more threads will be started.
I believe I have finally found a somewhat elegant (maybe a little hacky) solution to this limitation with ThreadPoolExecutor. It involves extending LinkedBlockingQueue to have ...
What is memoization and how can I use it in Python?
I just started Python and I've got no idea what memoization is and how to use it. Also, may I have a simplified example?
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PHP UML Generator [closed]
...erate UML/XMI files in version 1.4, or in version 2.1 (logical, component, and deployment views)
Can generate an API documentation in HTML format
Can generate PHP code (code skeleton) from a given XMI file
Can convert UML/XMI content from version 1.4 to version 2.1
Install it on the command line ...
Combine Date and Time columns using python pandas
I have a pandas dataframe with the following columns;
11 Answers
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MIN/MAX vs ORDER BY and LIMIT
...d field, using MIN() requires a single full pass of the table. Using SORT and LIMIT requires a filesort. If run against a large table, there would likely be a significant difference in percieved performance. As a meaningless data point, MIN() took .36s while SORT and LIMIT took .84s against a 106...