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How do I flush the cin buffer?
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Possibly:
std::cin.ignore(INT_MAX);
This would read in and ignore everything until EOF. (you can also supply a second argument which is the character to read until (ex: '\n' to ignore a single line).
Also: You probably want to do a: std::cin.clear(); before this too to reset the...
Writing string to a file on a new line every time
... I think the f.write method is better as it can be used in both Python 2 and 3.
– Dang Manh Truong
Apr 10 '18 at 12:02
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How do I plot in real-time in a while loop using matplotlib?
...ib.pyplot as plt
plt.axis([0, 10, 0, 1])
for i in range(10):
y = np.random.random()
plt.scatter(i, y)
plt.pause(0.05)
plt.show()
Note some of the changes:
Call plt.pause(0.05) to both draw the new data and it runs the GUI's event loop (allowing for mouse interaction).
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How to determine the longest increasing subsequence using dynamic programming?
... at element with index i. To compute DP[i] we look at all indices j < i and check both if DP[j] + 1 > DP[i] and array[j] < array[i] (we want it to be increasing). If this is true we can update the current optimum for DP[i]. To find the global optimum for the array you can take the maximum v...
How to format numbers? [duplicate]
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I wanted to use built in code and this got me there. The locales options is a small issue I'm willing to live with. I think this should be the accepted answer because it takes into account the locale nuances of number rendition.
– A...
When should you use constexpr capability in C++11?
...hat can be evaluated down to a constant while maintaining good readability and allowing slightly more complex processing than just setting a constant to a number.
It basically provides a good aid to maintainability as it becomes more obvious what you are doing. Take max( a, b ) for example:
templat...
Reading string from input with space character? [duplicate]
I'm using Ubuntu and I'm also using Geany and CodeBlock as my IDE.
What I'm trying to do is reading a string (like "Barack Obama" ) and put it in a variable:
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Append an array to another array in JavaScript [duplicate]
...rray1, array3);
I used .apply to push the individual members of arrays 2 and 3 at once.
or...
array1.push.apply(array1, array2.concat(array3));
To deal with large arrays, you can do this in batches.
for (var n = 0, to_add = array2.concat(array3); n < to_add.length; n+=300) {
array1.p...
How can I escape white space in a bash loop list?
...t -mindepth 1 -type d -print0)
You can also populate an array from find, and pass that array later:
# this is safe
declare -a myarray
while IFS= read -r -d '' n; do
myarray+=( "$n" )
done < <(find test -mindepth 1 -type d -print0)
printf '%q\n' "${myarray[@]}" # printf is an example; use ...
What's the fastest way to merge/join data.frames in R?
...he first. If there are duplicates in the second data frame then the match and merge approaches are not the same. Match is, of course, faster since it is not doing as much. In particular it never looks for duplicate keys. (continued after code)
DF1 = data.frame(a = c(1, 1, 2, 2), b = 1:4)
DF2 = da...