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Generate a random double in a range
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edited Sep 27 '15 at 18:03
answered Sep 9 '10 at 21:17
mob...
Converting between datetime, Timestamp and datetime64
...tetime.utcnow()
>>> dt
datetime.datetime(2012, 12, 4, 19, 51, 25, 362455)
>>> dt64 = np.datetime64(dt)
>>> ts = (dt64 - np.datetime64('1970-01-01T00:00:00Z')) / np.timedelta64(1, 's')
>>> ts
1354650685.3624549
>>> datetime.utcfromtimestamp(ts)
datetime.da...
Simplest way to detect a mobile device in PHP
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318
Here is a source:
Detect Mobile Browser
Download PHP script
Code:
<?php
$useragent=$...
How to compare strings ignoring the case
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answered May 16 '10 at 16:33
molfmolf
66.4k1313 gold badges129129 silver badges114114 bronze badges
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How to append rows to an R data frame
..., and then, at the end, create your data.frame.
Continuing with Julian's f3 (a preallocated data.frame) as the fastest option so far, defined as:
# pre-allocate space
f3 <- function(n){
df <- data.frame(x = numeric(n), y = character(n), stringsAsFactors = FALSE)
for(i in 1:n){
df$x[i...
What is %2C in a URL?
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623
Check out http://www.asciitable.com/
Look at the Hx, (Hex) column; 2C maps to ,
Any unusual en...
What is the difference between ui-bootstrap-tpls.min.js and ui-bootstrap.min.js?
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3 Answers
3
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Subscripts in plots in R
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138
expression is your friend:
plot(1,1, main=expression('title'^2)) #superscript
plot(1,1, main=...
Pandas get topmost n records within each group
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3 Answers
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