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Redis strings vs Redis hashes to represent JSON: efficiency?
...e cases):
Store the entire object as JSON-encoded string in a single key and keep track of all Objects using a set (or list, if more appropriate). For example:
INCR id:users
SET user:{id} '{"name":"Fred","age":25}'
SADD users {id}
Generally speaking, this is probably the best method in most cas...
data.table vs dplyr: can one do something well the other can't or does poorly?
...able , not so much with dplyr . I've read through some dplyr vignettes and examples that have popped up on SO, and so far my conclusions are that:
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ReSharper “Cannot resolve symbol” even when project builds
...Try Visual Studio → menu Tools → Options → ReSharper, Suspend button and Resume again (no need to close the window). This works in my case.
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android studio 0.4.2: Gradle project sync failed error
.......
This worked for me.
File -> Invalidate caches / Restart
Shutdown Android Studio
Rename/remove .gradle folder in the user home directory
Restart Android Studio let it download all the Gradle stuff it needs
Gradle build success !
Rebuild project.... success !
Out of curiousity I compared t...
Can we have functions inside functions in C++?
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Modern C++ - Yes with lambdas!
In current versions of c++ (C++11, C++14, and C++17), you can have functions inside functions in the form of a lambda:
int main() {
// This declares a lambda, which can be called just like a function
auto print_message = [](std::string message)
{
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Show current state of Jenkins build on GitHub repo
... token.
Check repo:status (I'm not sure this is necessary, but I did it, and it worked for me).
Generate the token, copy it.
Make sure the GitHub user you're going to use is a repository collaborator (for private repos) or is a member of a team with push and pull access (for organization repos) ...
Find nearest value in numpy array
... idx = (np.abs(array - value)).argmin()
return array[idx]
array = np.random.random(10)
print(array)
# [ 0.21069679 0.61290182 0.63425412 0.84635244 0.91599191 0.00213826
# 0.17104965 0.56874386 0.57319379 0.28719469]
value = 0.5
print(find_nearest(array, value))
# 0.568743859261
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Red black tree over avl tree
AVL and Red black trees are both self-balancing except Red and black color in the nodes. What's the main reason for choosing Red black trees instead of AVL trees? What are the applications of Red black trees?
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Redirect all output to file [duplicate]
...However, I'm not sure why part of the output is still output to the screen and not written to the file.
10 Answers
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Maintain aspect ratio of div but fill screen width and height in CSS?
...ite to put together that has a fixed aspect ratio of approximately 16:9 landscape, like a video.
9 Answers
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