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Read a variable in bash with a default value
...default value in the prompt between brackets is a fairly common convention
What does the :-Richard part do? From the bash manual:
${parameter:-word}
If parameter is unset or null, the expansion of word is substituted. Otherwise, the value of parameter is substituted.
Also worth noting that...
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Get the creation date of a stash
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(You can see that I also have similar markups for log and reflog)
Here's what it looks like:
If you want to show the actual date, rather than a relative time then replace %(cr) with %(ci).
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What does git push origin HEAD mean?
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What is the difference between: git push origin and git push origin HEAD?
– Maciek
Oct 25 '19 at 12:28
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How to make a chain of function decorators?
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Check out the documentation to see how decorators work. Here is what you asked for:
from functools import wraps
def makebold(fn):
@wraps(fn)
def wrapped(*args, **kwargs):
return "<b>" + fn(*args, **kwargs) + "</b>"
return wrapped
def makeitalic(fn):
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When to call activity context OR application context?
There has been a lot of posting about what these two contexts are.. But I'm still not getting it quite right
7 Answers
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Group a list of objects by an attribute : Java
I need to group a list of objects(Student) using an attribute(Location) of the particular object, the code is like below,
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What does the regex \S mean in JavaScript? [duplicate]
What does /\S/ mean in a regex?
5 Answers
5
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What does “not run” mean in R help pages?
....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f1454211%2fwhat-does-not-run-mean-in-r-help-pages%23new-answer', 'question_page');
}
);
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Java system properties and environment variables
What's the difference between system properties System.getProperties() and environment variables System.getenv() in a JVM?
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Algorithm to find Largest prime factor of a number
What is the best approach to calculating the largest prime factor of a number?
27 Answers
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