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Is std::unique_ptr required to know the full definition of T?
...s. However shared_ptr and unique_ptr are partial exceptions. Some, but not all of their members can be instantiated with incomplete types. The motivation for this is to support idioms such as pimpl using smart pointers, and without risking undefined behavior.
Undefined behavior can occur when you h...
Read a text file using Node.js?
...e.log(data)
});
To break that down a little for you process.argv will usually have length two, the zeroth item being the "node" interpreter and the first being the script that node is currently running, items after that were passed on the command line. Once you've pulled a filename from argv then...
Copy array items into another array
...han creating a new array.
However, it seems that for large arrays (of the order of 100,000 members or more), this trick can fail. For such arrays, using a loop is a better approach. See https://stackoverflow.com/a/17368101/96100 for details.
var newArray = [];
newArray.push.apply(newArray, dataArr...
Adding dictionaries together, Python [duplicate]
...de from the chainmap pypi package for Python2.7. Notice how I switched the order of the dicts. In the Vijay's example the rightmost keys' values overwrite the leftmost while ChainMap gets it right and the leftmost keys' values have precedence over the right.
– Bryce Guinta
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Heatmap in matplotlib with pcolor?
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Android webview slow
...chEvent code to improve it, it is just too much. But, you can "mock it" in order to limit the event rate for dragging movements let's say to 40ms or 50ms. (this depends on the processor).
All touch events go like this: ACTION_DOWN -> ACTION_MOVE......ACTION_MOVE -> ACTION_UP. So we need to ke...
Read file line by line using ifstream in C++
...compiled with -O3 optimization and its output is forwarded to /dev/null in order to remove the logging time variable from the measurement. Last, but not least, each piece of code logs each line with the printf() function for consistency.
The results show the time (in ms) that each piece of code too...
In Python, how do I split a string and keep the separators?
...f strings that are being used to split the string.
#sort separators in order of descending length
separators.sort(key=len)
listToReturn = []
Random row selection in Pandas dataframe
....sample(n=7)
For either approach above, you can get the rest of the rows by doing:
df_rest = df.loc[~df.index.isin(df_percent.index)]
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Why doesn't print work in a lambda?
...ed print function if you are using the latest Python 2.x:
In [1324]: from __future__ import print_function
In [1325]: f = lambda x: print(x)
In [1326]: f("HI")
HI
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