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Generate random 5 characters string
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$rand = substr(md5(microtime()),rand(0,26),5);
Would be my best guess--Unless you're looking for special characters, too:
$seed = str_split('abcdefghijklmnopqrstuvwxyz'
.'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
.'0123456789!@#$%^&*()...
PHP function to make slug (URL string)
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edited Jul 17 '18 at 20:04
leoap
1,48833 gold badges2222 silver badges2929 bronze badges
answered Ju...
How do I use boolean variables in Perl?
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In Perl, the following evaluate to false in conditionals:
0
'0'
undef
'' # Empty scalar
() # Empty list
('')
The rest are true. There are no barewords for true or false.
share
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Hex representation of a color with alpha channel?
...se rgba() functional notation with decimals or percentages, e.g. rgba(255, 0, 0, 0.5) would be 50% transparent red. RGB channels are 0-255 or 0%-100%, alpha is 0-1.
In CSS 4*, you can specify the alpha channel using the 7th and 8th characters of an 8 digit hex colour, or 4th character of a 4 digit ...
binning data in python with scipy/numpy
... easier to use numpy.digitize():
import numpy
data = numpy.random.random(100)
bins = numpy.linspace(0, 1, 10)
digitized = numpy.digitize(data, bins)
bin_means = [data[digitized == i].mean() for i in range(1, len(bins))]
An alternative to this is to use numpy.histogram():
bin_means = (numpy.histo...
Resolving MSB3247 - Found conflicts between different versions of the same dependent assembly
...he appropriate setting depending on your version:
Diagnostics when on VS2012, VS2013 or VS2015 (the message in these versions says you should use "Detailed", but this is plain wrong, you should use "Diagnostics")
Detailed when you're on VS2010
Normal will suffice in VS2008 or older.
Build the pro...
cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
...指令cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版本开始就存在了。 CPUID这条指令，除了用于识别CPU（CPU的型号...cpuid指令
cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版本开始就存在了。...
Calling clojure from java
...intln (str "(binomial 5 3): " (binomial 5 3)))
(println (str "(binomial 10042 111): " (binomial 10042 111)))
)
If you run it, you should see something like:
(binomial 5 3): 10
(binomial 10042 111): 49068389575068144946633777...
And here's a Java program that calls the -binomial function in th...
An “and” operator for an “if” statement in Bash
...US} is empty. It would probably be better to do:
if ! [ "${STATUS}" -eq 200 ] 2> /dev/null && [ "${STRING}" != "${VALUE}" ]; then
or
if [ "${STATUS}" != 200 ] && [ "${STRING}" != "${VALUE}" ]; then
It's hard to say, since you haven't shown us exactly what is going wrong wit...
What's the difference between lists enclosed by square brackets and parentheses in Python?
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Ondrej K.
6,5401111 gold badges1515 silver badges2727 bronze badges
answered Jan 17 '12 at 19:04
jterracejterrace
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