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Tell Ruby Program to Wait some amount of time
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681
Like this:
sleep(num_secs)
The num_secs value can be an integer or float.
Also, if you're wr...
How can I extract a good quality JPEG image from a video file with ffmpeg?
...le:v (or the alias -q:v) as an output option.
Normal range for JPEG is 2-31 with 31 being the worst quality.
The scale is linear with double the qscale being roughly half the bitrate.
Recommend trying values of 2-5.
You can use a value of 1 but you must add the -qmin 1 output option (because the de...
How to compare strings ignoring the case
...or casecmp. It returns 0 if two strings are equal, case-insensitively.
str1.casecmp(str2) == 0
"Apple".casecmp("APPLE") == 0
#=> true
Alternatively, you can convert both strings to lower case (str.downcase) and compare for equality.
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Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
...'t even find the col-lg-push-x or pull classes in the original files for RC1 i downloaded, so check your bootstrap.css file. hopefully this is something they will sort out in RC2.
anyways, the col-push-* and pull classes did exist and this will suit your needs. Here is a demo
<div class="row"&g...
How to set a single, main title above all the subplots with Pyplot?
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291
Use pyplot.suptitle or Figure.suptitle:
import matplotlib.pyplot as plt
import numpy as np
fig...
Gradient of n colors ranging from color 1 and color 2
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181
colorRampPalette could be your friend here:
colfunc <- colorRampPalette(c("black", "white"...
Dynamically update values of a chartjs chart
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14 Answers
14
Active
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Get the name of the currently executing method
... name as a string, call __method__.to_s instead.
Note: This requires Ruby 1.8.7.
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How do I break out of a loop in Perl?
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edited Jan 5 '18 at 17:41
Alexander Roskamp
2766 bronze badges
answered Nov 19 '08 at 20:23
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Accessing bash command line args $@ vs $*
... parameters are quoted. Let me illustrate the differences:
$ set -- "arg 1" "arg 2" "arg 3"
$ for word in $*; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in $@; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in "$*"; do echo "$word"; done
arg 1 arg 2 arg 3
$ for word in "$@"; d...