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Perform debounce in React.js
...;/div>
);
};
You will find this example running here and you should read react-async-hook documentation for more details.
2018: try promise debouncing
We often want to debounce API calls to avoid flooding the backend with useless requests.
In 2018, working with callbacks (Lodash/Undersco...
How to create the most compact mapping n → isprime(n) up to a limit N?
...
True, but there are better storage methods than reading from a file in a linear fashion. If you really want to read from a stored set of pre-generated primes, try a more complicated data structure that speeds up the problem.
– CogitoErgoCogitoSum
...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
... don't supported the GPU module of OpenCV. Have you built OpenCV for iOS already? Were you able to test it? I think these are the questions you need to answer before trying anything more advanced. Baby steps!
– karlphillip
Jan 25 '12 at 12:40
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To ARC or not to ARC? What are the pros and cons? [closed]
...RC also != just auto releasing everything, as you suggest in your comment. Read the docs
It's awesome once you realise how much manual reference management you were doing
Use it!
One drawback - maintaining old, non-arc code suddenly becomes very tedious.
...
Can dplyr package be used for conditional mutating?
...s it can evaluate both 'yes' and 'no' cases, and nesting can get harder to read/maintain IMHO.
Here's a benchmark on relatively bigger data:
# R version 3.1.0
require(data.table) ## 1.9.2
require(dplyr)
DT <- setDT(lapply(1:6, function(x) sample(7, 1e7, TRUE)))
setnames(DT, letters[1:6])
# &...
How do I delete a Git branch locally and remotely?
...option is an alias for --delete, which only deletes the branch if it has already been fully merged in its upstream branch. You could also use -D, which is an alias for --delete --force, which deletes the branch "irrespective of its merged status." [Source: man git-branch]
Delete Remote Branch [Upd...
Convert line-endings for whole directory tree (Git)
... sfk toclip - copy command output to clipboard
sfk fromclip - read text from clipboard
sfk list - show directory tree contents
sfk env - search environment variables
sfk version - show version of a binary file
sfk ascii - list ISO 8859-1 ASCI...
Choice between vector::resize() and vector::reserve()
...ouple of allocations, use reserve().
EDIT: Blastfurnace's comment made me read the question again and realize, that in your case the correct answer is don't preallocate manually. Just keep inserting the elements at the end as you need. The vector will automatically reallocate as needed and will do ...
How to print out the contents of a vector?
...If you just want an answer you can use, then you can stop here; otherwise, read on.
auto (C++11) / typedef / type alias (C++11)
This is not another solution, but a supplement to the above iterator solution. If you are using the C++11 standard (or later), then you can use the auto keyword to help the...
What is the difference between min SDK version/target SDK version vs. compile SDK version?
... turned on by default even if thought targetSdkVersion is <, you should read official doc.
For example:
Starting in Android 6.0 (API level 23) Runtime Permissions were introduced. If you set targetSdkVersion to 22 or lower your application does not ask a user for some permission in run time.
St...