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Running multiple commands with xargs
...apply shell-like (but not quite shell-compatible) parsing to the stream it reads. (If you don't have GNU xargs, you can use tr '\n' '\0' <a.txt | xargs -0 ... to get line-oriented reading without -d).
The _ is a placeholder for $0, such that other data values added by xargs become $1 and onward, ...
Reading and writing environment variables in Python? [duplicate]
...the environment variables aren't available from the shell. only python can read the environment variables set this way.
– openCivilisation
Mar 16 '19 at 9:47
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What happens if you don't commit a transaction to a database (say, SQL Server)?
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I'm pretty sure what data is able to be read by a connection is definitely dependant on the isolation level. If you have the isolation set to READ UNCOMMITTED you can read data not yet committed and may in fact be rolled back at some point the track, but this ensur...
Python Script execute commands in Terminal
I read this somewhere a while ago but cant seem to find it. I am trying to find a command that will execute commands in the terminal and then output the result.
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Accessing inactive union member and undefined behavior?
...11
6.5.2.3 Structure and union members
95) If the member used to read the contents of a union object is not the same as the member last used to
store a value in the object, the appropriate part of the object representation of the value is reinterpreted
as an object representation in th...
Fast way to get image dimensions (not filesize)
...oo long to get the size with ImageMagick's identify because it obviously reads the images as a whole first.
8 Answers
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ipython reads wrong python version
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This is an old thread, but I've also come accross virtualenvs and like them nice for developing products. For the purpose of "everyday" analysis however, I'd rather just have a straight up usable version of python/ipython in my system.
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Retrieve version from maven pom.xml in code
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The answer below using the MavenXppReader to get the actual model is really useful, as it doesn't need to run anything to find the value. In cases where you need to know the version before anything is run, look at the answers below; it was very helpful for me...
Volatile boolean vs AtomicBoolean
...le integer:
volatile int i = 0;
void incIBy5() {
i += 5;
}
If two threads call the function concurrently, i might be 5 afterwards, since the compiled code will be somewhat similar to this (except you cannot synchronize on int):
void incIBy5() {
int temp;
synchronized(i) { temp = i }
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Are there any CSV readers/writer libraries in C#? [closed]
Are there any CSV readers/writer libraries in C#?
5 Answers
5
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