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find() with nil when there are no records
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edited Jul 10 '17 at 10:14
answered Mar 7 '12 at 15:47
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Map.clear() vs new Map : Which one will be better? [duplicate]
... Let's see what happens.
You instantiate a new instance, which is backed with new array. So, garbage collector should clear all the key and values from the previous map, and clear the reference to itself. So O(n) algorithm is executed anyway, but in the garbage collector thread. For 1000 records yo...
Context switches much slower in new linux kernels
...S on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to believe.
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Returning multiple values from a C++ function
...n C++11 and newer, there's std::tuple) for more than two return results.
With introduction of structured binding in C++ 17, returning std::tuple should probably become accepted standard.
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Parallel.ForEach vs Task.Factory.StartNew
...e first is a much better option.
Parallel.ForEach, internally, uses a Partitioner<T> to distribute your collection into work items. It will not do one task per item, but rather batch this to lower the overhead involved.
The second option will schedule a single Task per item in your collecti...
Emulate ggplot2 default color palette
...For example, an input of 3 would produce a character vector of HEX colors with these colors:
4 Answers
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When splitting an empty string in Python, why does split() return an empty list while split('\n') re
I am using split('\n') to get lines in one string, and found that ''.split() returns an empty list, [] , while ''.split('\n') returns [''] . Is there any specific reason for such a difference?
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How to access cookies in AngularJS?
...urrounding $cookies. They are pretty much the same in that they only work with session cookies. Although, this answers the original question, there are other solutions you may wish to consider such as using localstorage, or jquery.cookie plugin (which would give you more fine-grained control and do ...
undefined reference to `__android_log_print'
What is wrong with my make file?
15 Answers
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do you have kcachegrind like profiling tools for mac [closed]
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I ended up using qcachegrind on OSX. It can be installed via brew
brew install qcachegrind
or, to enable graphviz support:
brew install qcachegrind --with-graphviz
What's great about this program is that I successfully loaded a 6.1GB cachegrind file on my ...