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How can I pad an integer with zeros on the left?
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what if i dont want to append a leading 0 but another letter/number? thanks
– chiperortiz
Jan 14 '19 at 15:01
1
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Streaming video from Android camera to server
...droid phone to IP camera:
http://code.google.com/p/ipcamera-for-android
Raw video data is fetched from LocalSocket, and the MDAT MOOV of MP4 was checked first before streaming. The live video is packed in FLV format, and can be played via Flash video player with a build in web server :)
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How do I use floating-point division in bash?
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You could use bc by the -l option (the L letter)
RESULT=$(echo "$IMG_WIDTH/$IMG2_WIDTH" | bc -l)
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Free space in a CMD shell
...ion I wrote a little bit more sophisticated batch script, which uses drive letter as the incoming argument and checks if drive exists on a tricky (but not beauty) way:
@echo off
setlocal enableextensions enabledelayedexpansi
In Bash, how to add “Are you sure [Y/n]” to any command or alias?
... forms of Hamish's answer. They handle any mixture of upper and lower case letters:
read -r -p "Are you sure? [y/N] " response
case "$response" in
[yY][eE][sS]|[yY])
do_something
;;
*)
do_something_else
;;
esac
Or, for Bash >= version 3.2:
read -r -p "...
Converting string to title case
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Recently I found a better solution.
If your text contains every letter in uppercase, then TextInfo will not convert it to the proper case. We can fix that by using the lowercase function inside like this:
public static string ConvertTo_ProperCase(string text)
{
TextInfo myTI = new Cu...
Vim: insert the same characters across multiple lines
...record my actions and would then repeat it.
Put your cursor on the first letter in name.
Hit qq to start recording into the q buffer.
Hit i to go into insert mode, type vector_, and then hit Esc to leave insert mode.
Now hit 0 to go back to the beginning of the line.
Now hit j to go down.
Now hit ...
Regex lookahead, lookbehind and atomic groups
...d by end of line.
REGEX_2 is [a-z]{1,2}[0-9]{2,3} which matches one or two letters followed by two or three digits.
REGEX_1 makes sure that the length of string is indeed 4, but doesn't consume any characters so that search for REGEX_2 starts at the same location. Now REGEX_2 makes sure that the st...
git: 'credential-cache' is not a git command
I followed these instructions to the letter, including the part about password caching. It seems like the instructions are wrong, because every time I git push origin master I get this error:
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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
...emoved the JRE. Suddenly Maven ran stable!
Maybe this is worth putting in letters with font-size 30 or so in the Apache manual?
With all due respect, this is simply outrageous for the Java community! I can't imagine how many days were lost by all these people, trying to work out their problems of ...