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How to tell if a string is not defined in a Bash shell script
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Good practice in bash. Sometimes file paths have spaces, or to protect against command injection
– k107
Mar 9 '15 at 17:54
1
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CSS for grabbing cursors (drag & drop)
...several fallbacks for cross-browser compatibility3 including custom cursor files, a complete solution would look like this:
.draggable {
cursor: move; /* fallback: no `url()` support or images disabled */
cursor: url(images/grab.cur); /* fallback: Internet Explorer */
cursor: -webkit-gr...
Google Maps API 3 - Custom marker color for default (dot) marker
...API v3 you can use setIcon e.g.
marker.setIcon('http://maps.google.com/mapfiles/ms/icons/green-dot.png')
Or as part of marker init:
marker = new google.maps.Marker({
icon: 'http://...'
});
Other colours:
Blue marker
Red marker
Purple marker
Yellow marker
Green marker
Use the following ...
How do I update zsh to the latest version?
...th
sudo vim /etc/shells
# add the following line into the very end of the file(/etc/shells)
/usr/local/bin/zsh
# change default shell
chsh -s /usr/local/bin/zsh
Hope it helps, thanks.
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How can I get nth element from a list?
...you want to know more about the theory a good place to start is the readme file at the github repo.
Accessing lists and other datatypes
Getting access to the lens package
At the command line:
$ cabal install lens
$ ghci
GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
Loading packag...
Should I use Java's String.format() if performance is important?
...nation for this data is a stream (e.g. rendering a webpage or writing to a file), you can assemble the format chunks directly into your stream:
new PrintStream(outputStream, autoFlush, encoding).format("hello {0}", "world");
I speculate that the optimizer will optimize away the format string proc...
Reading GHC Core
...out. The primop set is given as a set of Core functions in a pre-processed file.
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How make Eclipse/EGit recognize existing repository information after update?
...could fix the problem by deleting the project (without deleting the actual files) and then importing the project back to eclipse.
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Determine a user's timezone
...f your website requires subscription, this could be saved in the users' profile data. For anon users, the dates could be displayed as UTC or GMT or some such.
I'm not trying to be a smart aleck. It's just that sometimes some problems have finer solutions outside of any programming context.
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Is storing a delimited list in a database column really that bad?
...the process of designing the schema for a MySQL database to replace a flat file text based system. I've encountered several dilemmas so far. So this book will be worth buying.
– therobyouknow
Jan 30 '12 at 16:16
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