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How to compare objects by multiple fields
...; then the method is compareTo(Person p).. it seems that this answer was mixed up with Comparator's compare<T o1, T o2> method
– Mike
Dec 14 '12 at 12:59
...
What is thread safe or non-thread safe in PHP?
...currency models (using Asynchronous sockets and I/O), as well as ones that mix two or even three models together. For the purpose of answering this question, we are only concerned with the two models above, and taking Apache HTTP server as an example.
Needed background on how PHP "integrates" with ...
ImportError: No module named matplotlib.pyplot
...
In python3, a separate installation of matplotlib using python3 -m pip install matplotlib solved the error. Tested on Ubuntu 16.04.
– vineeshvs
Jun 5 '19 at 6:22
...
Group by multiple columns in dplyr, using string vector input
...ike s_group_by, s_mutate, s_filter, etc that use string arguments. You can mix them with the normal dplyr functions. For example
cols = c("cyl","gear")
mtcars %.%
s_group_by(cols) %.%
s_summarise("avdisp=mean(disp), max(disp)") %.%
arrange(avdisp)
...
HTTP status code 0 - Error Domain=NSURLErrorDomain?
I am working on an iOS project.
12 Answers
12
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Multi-line string with extra space (preserved indentation)
...ree\n"
printf "%b" "$text" > filename
Another solution is achieved by mixing printf and sed.
if something
then
printf '%s' '
this is line one
this is line two
this is line three
' | sed '1d;$d;s/^ //g'
fi
It is not easy to refactor code formatted like this as you hard...
UITableView Setting some cells as “unselectable”
...ew's cell property to be unselectable? I don't want to see that blue selection box when the user taps on the cell.
16 Answe...
What's the difference between a mock & stub?
...ur SUT handles receiving messages, mocks test how your SUT sends messages. Mixing up the 2 is likely to lead to bad OO design.
– dave1010
Aug 24 '15 at 7:41
8
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What does the 'b' character do in front of a string literal?
....
>>> b'\xE2\x82\xAC'.decode('UTF-8')
'€'
But you can't freely mix the two types.
>>> b'\xEF\xBB\xBF' + 'Text with a UTF-8 BOM'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: can't concat bytes to str
The b'...' notation is somew...
Entity Framework: table without primary key
...
@MahmoudMoravej: First off, don't mix up the ideas of clustering indexes and primary keys. They aren't the same thing. You can have very highly performant inserts on tables with clustered indicies on IDENTITY columns. If you run into issues with index main...