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abort, terminate or exit?
What's the difference between those three, and how shall I end program in case of exception which I can't handle properly?
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nano error: Error opening terminal: xterm-256color
After the installation of OSX Lion, I tried to:
10 Answers
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Actual meaning of 'shell=True' in subprocess
...lling via the shell is that you are not invoking a 'mystery program.' On POSIX, the environment variable SHELL controls which binary is invoked as the "shell." On Windows, there is no bourne shell descendent, only cmd.exe.
So invoking the shell invokes a program of the user's choosing and is plat...
brew update: The following untracked working tree files would be overwritten by merge:
...d to run brew update and I get an error about my local changes would be lost if I merged. I tried committing my local changes (don't remember making any, but it's been awhile), and that made things worse.
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What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
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Microsoft has a blog entry What AnyCPU Really Means As Of .NET 4.5 and Visual Studio 11:
In .NET 4.5 and Visual Studio 11 the cheese has been moved. The
default for most .NET projects is again AnyCPU, but there is more than...
Android 4.3 Bluetooth Low Energy unstable
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Important implementation hints
(Perhaps some of those hints aren't necessary anymore due to Android OS updates.)
Some devices like Nexus 4 with Android 4.3 take 45+ seconds to connect using an existing gatt instance. Work around: Always close gatt instances on disconnect a...
What's the best way to check if a file exists in C?
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POSIX is an ISO standard; it defines access(). C is another ISO standard; it does not.
– Jonathan Leffler
Oct 24 '08 at 7:23
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Python's time.clock() vs. time.time() accuracy?
...eryPerformanceCounter(). The resolution is typically
better than one microsecond.
Additionally, there is the timeit module for benchmarking code snippets.
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Android static object lifecycle
...h a bit of background: What happens when you start an application?
The OS starts a process and assigns it a unique process id and allocates a process table.A process start an instance of DVM(Dalvik VM); Each application runs inside a DVM.
A DVM manages class loading unloading, instance lifecycle...
How to output only captured groups with sed?
...z" | sed 's/^foo\(.*\)baz$/\1/'
will output "bar". If you use -r (-E for OS X) for extended regex, you don't need to escape the parentheses:
echo "foobarbaz" | sed -r 's/^foo(.*)baz$/\1/'
There can be up to 9 capture groups and their back references. The back references are numbered in the orde...