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rsync error: failed to set times on “/foo/bar”: Operation not permitted
I'm getting a confusing error from rsync and the initial things I'm finding from web searches (as well as all the usual chmod'ing) are not solving it:
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What does the construct x = x || y mean?
...o if you call the method with no arguments it will use a default value of "Error".
It's shorthand for writing:
if (!title) {
title = "Error";
}
This kind of shorthand trick with boolean expressions is common in Perl too. With the expression:
a OR b
it evaluates to true if either a or b is t...
Bash tool to get nth line from a file
...00 -d$'\n' myfile.ascii
pgm_icnt = 0
real 5m12.156s
This one took 00:05:12.156 to run, which is much slower than the baseline! I'm not sure whether it read through the entire file or just up to line 50 million before stopping, but regardless this doesn't seem like a viable solution to the prob...
Python: try statement in a single line
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Some people abuse the short-circuiting behavior of or to do this. This is error prone, so I never use it.
c = None
b = [1, 2]
a = c or b
Consider the following case:
c = []
b = [1, 2]
a = c or b
In this case, a probably should be [], but it is [1, 2] because [] is false in a boolean context. ...
Strange SQLAlchemy error message: TypeError: 'dict' object does not support indexing
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I wish they would of updated that error message, every time I get it I end up landing on this page and answer
– oshi2016
Mar 16 '17 at 5:46
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Compare dates in MySQL
...elow query,
select * from players
where
us_reg_date between '2000-07-05'
and
DATE_ADD('2011-11-10',INTERVAL 1 DAY)
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How to unload a package without restarting R
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> detach("package:MASS", unload=TRUE) Error in detach("package:MASS", unload = TRUE) : invalid 'name' argument
– Mona Jalal
Feb 12 '14 at 2:39
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mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
...eversely (primary to secondary and vice versa) and we are getting the same error.
so please check in the configuration settings for database status which may help you.
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Working copy locked error in tortoise svn while committing
...from a few days I'm not able to commit the changes and I get the following error whenever I try to commit.
10 Answers
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What does the “assert” keyword do? [duplicate]
...tement
assert cond;
is equivalent to
if (!cond)
throw new AssertionError();
If you launch your program without this option, the assert statement will have no effect.
For example, assert d >= 0 && d <= s.length();, as posted in your question, is equivalent to
if (!(d >= 0...