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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
...ns its exit status.
See: help wait and help jobs for syntax.
However the downside is that this will return on only the status of the last ID, so you need to check the status for each subprocess and store it in the variable.
Or make your calculation function to create some file on failure (empty o...
Run batch file as a Windows service
...ows cmd to do this: sc create. Not as fancy as nssm, but you don't have to download an additional piece of software.
sc create "ServiceName" start= demand displayname= "DisplayName" binpath= [path to .bat file]
Note
start=demand means you must start the service yourself
whitespace is required a...
Why would you use an ivar?
...code just a small gear of a complicated clockwork? And if every gear slows down the whole process like this, what does that mean for the speed of the whole clockwork in the end? Especially if one work step depends on the output of another one, which means all the inefficiencies will sum up. Most ine...
Single huge .css file vs. multiple smaller specific .css files? [closed]
...ting it out causes extra http requests which could potentially slow things down.
My opinion would be one of two things.
1) If you know that your CSS will NEVER change once you've built it, I'd build multiple CSS files in the development stage (for readability), and then manually combine them befor...
What should every developer know about databases? [closed]
...ortant, such as the ability to revise and extend the scope of the database down the road, or simplicity of programming.
Finally, anybody who messes with databases needs to understand that the value of data often outlasts the system that captured it.
Whew!
...
Salting Your Password: Best Practices?
...swords far predates rainbow tables. Salts were added specifically to slow down dictionary attacks, by preventing attackers from hashing a password once then comparing it against all users.
– Glenn Maynard
Mar 5 '12 at 16:20
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Hidden Features of Java
...es method and obtain a sorted thread safe Set of Strings without having to down cast to the ConcurrentSkipListSet.
share
edited Aug 29 '08 at 19:44
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Django auto_now and auto_now_add
...relying on these field arguments is two-fold:
The aforementioned ups and downs with their reliability. These arguments are heavily reliant on the way each type of database that Django knows how to interact with treats a date/time stamp field, and seems to break and/or change between every release...
How to name and retrieve a stash by name in git?
... the stashes are stored in a stack.
Type:
git stash list
This will list down all your stashes.
To apply a stash and remove it from the stash stack, type:
git stash pop stash@{n}
To apply a stash and keep it in the stash stack, type:
git stash apply stash@{n}
Where n is the index of the sta...
How to convert an NSTimeInterval (seconds) into minutes
... done with this, it wraps to the nearest second rather than rounding up or down. Your mileage may vary.
– David Doyle
Apr 9 '13 at 9:55
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