大约有 7,400 项符合查询结果（耗时：0.0259秒） [XML]
How does C compute sin() and other math functions?
...hev polynomials are used for most transcendentals but not all. e.g. Square root is faster to use a double iteration of Newton raphson method using a lookup table first.
Again, that book "Computer Approximations" will tell you that.
If you plan on implmementing these functions, I'd recommend to anyo...
How to implement Rate It feature in Android App
...flater.inflate(R.layout.custom_dialog, (ViewGroup)findViewById(R.id.layout_root));
AppRate.with(this).setView(view).monitor();
Specific theme
You can use a specific theme to inflate the dialog.
AppRate.with(this).setThemeResId(int);
Custom dialog
If you want to use your own dialog labels, ove...
How many socket connections can a web server handle?
...oc/sys/net/core/somaxconn
This number can be modified on the fly (only by root user of course)
echo 1024 > /proc/sys/net/core/somaxconn
But entirely depends on the server process, the hardware of the machine and the network, the real number of sockets that can be connected before crashing the ...
Where to host an Open Source Project: CodePlex, Google Code, SourceForge? [closed]
...On Git or mercurial, you have a file called .gitignore or .hgignore in the root of your source tree which includes a list of files/directories/patterns to ignore. No magic svn:ignore metadata in the .svn folder. This alone blows SVN out of the water for me. If I start a new Visual Studio project I n...
Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?
...iOS 7 and iOS 6 device.
Quick steps:
Select each immediate children of root view individually and add 20px to its 'Y' value.
Then, select all immediate children collectively and give delta Y as -20px. You can also do this in batch or individually.
...
Moving matplotlib legend outside of the axis makes it cutoff by the figure box
...er response from the matplotlib mailling list (Thanks goes out to Benjamin Root).
The code I am looking for is adjusting the savefig call to:
fig.savefig('samplefigure', bbox_extra_artists=(lgd,), bbox_inches='tight')
#Note that the bbox_extra_artists must be an iterable
This is apparently simil...
Speed up the loop operation in R
...
Biggest problem and root of ineffectiveness is indexing data.frame, I mean all this lines where you use temp[,].
Try to avoid this as much as possible. I took your function, change indexing and here version_A
dayloop2_A <- function(temp){
...
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
...er". If you put the mentioned code inside a file called handlers.py on the root of the "scraper" folder, then you could add to your settings.py:
DOWNLOAD_HANDLERS = {
'http': 'scraper.handlers.PhantomJSDownloadHandler',
'https': 'scraper.handlers.PhantomJSDownloadHandler',
}
And voilà, t...
How do RVM and rbenv actually work?
...earches each parent directory for an .rbenv-version file until it hits the root of your filesystem. If one is found, its contents are used to set the RBENV_VERSION environment variable.
If RBENV_VERSION is still not set, rbenv tries to set it using the contents of the ~/.rbenv/version file.
If no ve...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...to that code as GENERATED_CODE.
Login to your server
If you login as the root user, find this file and edit it:
$ vi /etc/profile
Go to the bottom of the file using Shift+G (capital "G") in vi.
Write your environment variable with the GENERATED_CODE, pressing i to insert in vi. Be sure to be i...