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How to use HttpWebRequest (.NET) asynchronously?
...r, args) => {
args.Result = new WebClient().DownloadString(settings.test_url);
};
worker.RunWorkerCompleted += (sender, e) => {
if (e.Error != null) {
connectivityLabel.Text = "Error: " + e.Error.Message;
} else {
connectivityLabel.Text = "Connectivity OK";
...
What is the purpose of .PHONY in a Makefile?
... files at both the side of ':' symbol in a rule.
Example
In a directory 'test' following files are present:
prerit@vvdn105:~/test$ ls
hello hello.c makefile
In makefile a rule is defined as follows:
hello:hello.c
cc hello.c -o hello
Now assume that file 'hello' is a text file containin...
Threads vs Processes in Linux
...
Yes, I do have some data. I ran a test that creates 100,000 processes and a test that creates 100,000 threads. The thread version ran about 9x faster (17.38 seconds for processes, 1.93 for threads). Now this does only test creation time, but for short-lived ...
Why is there no xrange function in Python3?
...only 30% slower. How did the OP get 2x as slow? Well, if I repeat the same tests with 32-bit Python, I get 1.58 vs. 3.12. So my guess is that this is yet another of those cases where 3.x has been optimized for 64-bit performance in ways that hurt 32-bit.
But does it really matter? Check this out, w...
How to trim a string in SQL Server before 2017?
...this example, Space, tab, LF and CR characters are being trimmed:
Declare @Test nvarchar(50) = Concat (' ', char(9), char(13), char(10), ' ', 'TEST', ' ', char(9), char(10), char(13),' ', 'Test', ' ', char(9), ' ', char(9), char(13), ' ')
DECLARE @TrimPattern nvarchar(max) = '%[^ ' + char(9) + char(...
How to decide font color in white or black depending on background color?
...dations is (L1 + 0.05) / (L2 + 0.05), where L1 is the luminance of the lightest color and L2 is the luminance of the darkest on a scale of 0.0-1.0. The luminance of black is 0.0 and white is 1.0, so substituting those values lets you determine the one with the highest contrast. If the contrast for b...
What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
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Unfortunately that test is improperly prepared. It's testing an initialization of an Array with initializations of arrays followed by Array access. There's no control to prove that the browsers are actually pre-allocating the memory (which the ...
mmap() vs. reading blocks
...or many real world cases there's no sure way to show one is faster without testing your actual application and NOT a benchmark.
(Sorry for necro'ing this question, but I was looking for an answer and this question kept coming up at the top of Google results.)
...
Get folder name from full file path
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@PeterMortensen, no. I just tested this and the method returns the name of the lowest level folder from the string, even if the folder path does not exist.
– vbguyny
Apr 5 '16 at 13:40
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Convert string in base64 to image and save on filesystem in Python
... @Oleg Tarasenko, I had a typo in the second method. I fiexed it and tested it on your string and it works.
– John La Rooy
Feb 25 '10 at 21:13
...