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check if a std::vector contains a certain object? [duplicate]
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If searching for an element is important, I'd recommend std::set instead of std::vector. Using this:
std::find(vec.begin(), vec.end(), x) runs in O(n) time, but std::set has its own find() member (ie. myset.find(x)) which runs in O(log n) time - that's much more efficient with large ...
How to remove line breaks (no characters!) from the string?
This might appear to be a dupe, but rest assured it isn't - I have searched both SO as well as the rest of the web for an answer to my problem and ended up finding the same insufficient "solutions" over and over. Anyhow, here it goes:
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sed command with -i option (in-place editing) works fine on Ubuntu but not Mac [duplicate]
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@pal4life the point is that you need a separate set of quotes before you start the command, so something like sed -i '' '1i export PATH="$HOME/.composer/vendor/bin:$PATH"' $HOME/.bashrc
– microtherion
May 7 '14 at 15:24
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Replace X-axis with own values
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Yo could also set labels = FALSE inside axis(...) and print the labels in a separate command with Text. With this option you can rotate the text the text in case you need it
lablist<-as.vector(c(1:10))
axis(1, at=seq(1, 10, by=1), labe...
pandas: How do I split text in a column into multiple rows?
I'm working with a large csv file and the next to last column has a string of text that I want to split by a specific delimiter. I was wondering if there is a simple way to do this using pandas or python?
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How do I turn a python datetime into a string, with readable format date?
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The datetime class has a method strftime. The Python docs documents the different formats it accepts:
Python 2: strftime() Behavior
Python 3: strftime() Behavior
For this specific example, it would look something like:
my_datetime.strftime("%B %d, %Y")
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How to use JavaScript regex over multiple lines?
I'd want the PRE block be picked up, even though it spans over newline characters. I thought the 'm' flag does it. Does not.
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Why should eval be avoided in Bash, and what should I use instead?
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VAR+=( ['alpha']='beta' [2]=3 ) # Combine arrays
VAR['cow']='moo' # Set a single element
unset VAR['cow'] # Unset a single element
unset VAR # Unset an entire array
unset VAR[@] # Unset an entire array
unset VAR[*] # Unset each element with a key corresponding to a file in the
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Why Func instead of Predicate?
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How to put individual tags for a scatter plot
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xy=(x, y), xytext=(-20, 20),
textcoords='offset points', ha='right', va='bottom',
bbox=dict(boxstyle='round,pad=0.5', fc='yellow', alpha=0.5),
arrowprops=dict(arrowstyle = '->', connectionstyle='arc3,rad=0'))
plt.show()
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