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Effect of a Bitwise Operator on a Boolean in Java
...bitwise operators are supposed to travel variables and operate on them bit by bit. In the case of integers, longs, chars this makes sense. These variables can contain the full range of values enforced by their size.
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Extract substring using regexp in plain bash
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@VictorZamanian from here: "By default, sed prints every line. If it makes a substitution, the new text is printed instead of the old one. If you use an optional argument to sed, "sed -n," it will not, by default, print any new lines. ... When the "-n" ...
Convert float to double without losing precision
...ubleToRawLongBits(d3)));
You can see the float is expanded to the double by adding 0s to the end, but that the double representation of 0.27 is 'more accurate', hence the problem.
111110100010100011110101110001
11111111010001010001111010111000100000000000000000000000000000
11111111010001010001...
What does axis in pandas mean?
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It specifies the axis along which the means are computed. By default axis=0. This is consistent with the numpy.mean usage when axis is specified explicitly (in numpy.mean, axis==None by default, which computes the mean value over the flattened array) , in which axis=0 along the rows...
How do I get the current date and time in PHP?
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The time would go by your server time. An easy workaround for this is to manually set the timezone by using date_default_timezone_set before the date() or time() functions are called to.
I'm in Melbourne, Australia so I have something like th...
C# if/then directives for debug vs release
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By default, Visual Studio defines DEBUG if project is compiled in Debug mode and doesn't define it if it's in Release mode. RELEASE is not defined in Release mode by default. Use something like this:
#if DEBUG
// debug stu...
nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
...is most likely happening because of the long domain name. You can fix this by adding
server_names_hash_bucket_size 64;
at the top of your http block (probably located in /etc/nginx/nginx.conf). I quote from the nginx documentation what to do when this error appears: In this case, the directive val...
“ClickOnce does not support the request execution level 'requireAdministrator.'”
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it start a new instance, which by define does not attach to the debugger.. (you call upon new free (unattached) instance, and close the one attached to debugger)
– deadManN
Dec 31 '17 at 6:40
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Convert base64 string to ArrayBuffer
..._string = window.atob(base64);
var len = binary_string.length;
var bytes = new Uint8Array(len);
for (var i = 0; i < len; i++) {
bytes[i] = binary_string.charCodeAt(i);
}
return bytes.buffer;
}
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#pragma mark in Swift?
...he source code editor.
some examples :
// MARK:
-> will be preceded by a horizontal divider
// MARK: your text goes here
-> puts 'your text goes here' in bold in the drop down list
// MARK: - your text goes here
-> puts 'your text goes here' in bold in the drop down list, preceded...