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MongoDB: Is it possible to make a case-insensitive query?
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I recently tested with mongodb 3.0.4 with 100,000 records with a name field indexed. The case insensitive regex query takes over 200ms where casesensitive regex takes about 16ms.(Both cases include regex start with '^')
– dCoder
Dec...
A weighted version of random.choice
...ter than numpy.random.choice . Picking from a list of 8 weighted items 10,000 times, numpy.random.choice took 0.3286 sec where as random.choices took 0.0416 sec, about 8x faster.
– Anton Codes
Jun 18 '19 at 13:34
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How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
... edited Nov 5 '14 at 12:33
Dummy00001
14.4k55 gold badges3131 silver badges5555 bronze badges
answered Dec 5 '13 at 12:09
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Is there a working C++ refactoring tool? [closed]
...factoring tool for C++ that works reliably with large code bases (some 100.000 lines)?
19 Answers
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Reading CSV files using C#
...ast CSV reader on a 53Mb file. Looks like the line caching failed after 43,000 rows and scrambled the buffer. Tried the VB TextFieldParser and it did the trick. Thanks
– Gone Coding
May 21 '12 at 12:54
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CSS background image to fit width, height should auto-scale in proportion
...ilver;
padding-top:1ex;
}
div > div::after {
background-color: #000;
color: #fefefe;
margin: 1ex;
padding: 1ex;
opacity: 0.8;
display: block;
width: 10ex;
font-size: 0.7em;
content: attr(class);
}
<div>
<div class="contain"></div>
<p>...
Good Hash Function for Strings
...d use hash codes instead. Throughout my entire corpus, there are about 600,000 unique words, and using the default java hashcode function, I was getting about 3.5% collisions. But if I SHA-256 the string value and then generate a hashcode from the digested string, the collision ratio is less than 0....
How does one make a Zip bomb?
...e under Linux using the following command:
dd if=/dev/zero bs=1024 count=10000 | zip zipbomb.zip -
Replace count with the number of KB you want to compress. The example above creates a 10MiB zip bomb (not much of a bomb at all, but it shows the process).
You DO NOT need hard disk space to store a...
Reading a huge .csv file
... 100mb to 1.6gb). I can do this (very slowly) for the files with under 300,000 rows, but once I go above that I get memory errors. My code looks like this:
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Test if string is a number in Ruby on Rails
...±5.5%) i/s - 5788976 in 5.035311s
require 'benchmark/ips'
int = '220000'
bad_int = '22.to.2'
Benchmark.ips do |x|
x.report('cast') do
Integer(int) rescue false
end
x.report('cast fail') do
Integer(bad_int) rescue false
end
x.report('to_s') do
int.to_i.to_s == int
e...