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What are “first class” objects?
...cos = makeDerivative( Math.sin, 0.000001);
// cos(0) ~> 1
// cos(pi/2) ~> 0
Source.
Entities that are not first class objects are referred to as second-class objects. Functions in C++ are second class because they can't be dynamically created.
Regarding the edit:
EDIT. When one ...
Storing SHA1 hash values in MySQL
...racters. But if you use 8 bit per character, you would only need a 160/8 = 20 character long field.
So I recommend you to use BINARY(20) and the UNHEX function to convert the SHA1 value to binary.
I compared storage requirements for BINARY(20) and CHAR(40).
CREATE TABLE `binary` (
`id` int un...
what is the difference between 'transform' and 'fit_transform' in sklearn
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The .transform method is meant for when you have already computed PCA, i.e. if you have already...
How to find serial number of Android device?
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answered Feb 23 '10 at 23:10
hasemanhaseman
10.6k88 gold badges3838 silver badges3838 bronze badges
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How do I apply CSS3 transition to all properties except background-position?
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answered Jun 23 '14 at 16:43
Felix EdelmannFelix Edelmann
4,07222 gold badges2424 silver badges3333 bronze badges
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Node.js spawn child process and get terminal output live
...d = require('child_process').execFile('path/to/script', [
'arg1', 'arg2', 'arg3',
], function(err, stdout, stderr) {
// Node.js will invoke this callback when process terminates.
console.log(stdout);
});
2. Add a listener to the child process' stdout stream (9thport.net)
var child...
Why Large Object Heap and why do we care?
...n the array has more than 1000 elements. That's another optimization for 32-bit code, the large object heap allocator has the special property that it allocates memory at addresses that are aligned to 8, unlike the regular generational allocator that only allocates aligned to 4. That alignment is ...
Open file via SSH and Sudo with Emacs
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As of Emacs 24.3, an analog of the old multi: syntax has been layered on top of the modern tramp-default-proxies-alist approach, meaning that you can once again perform multi-hops without any prior configuration. For details, see:
C-hig ...
Get current controller in view
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answered Jul 28 '11 at 2:07
Nicholas SizerNicholas Sizer
3,18033 gold badges2525 silver badges2929 bronze badges
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Measure the time it takes to execute a t-sql query
I have two t-sql queries using SqlServer 2005. How can I measure how long it takes for each one to run?
6 Answers
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