大约有 40,000 项符合查询结果（耗时：0.0380秒） [XML]
How to express infinity in Ruby?
...
http://www.ruby-doc.org/stdlib-1.9.3/libdoc/bigdecimal/rdoc/BigDecimal.html#label-Infinity
1.9.3p429 :025 > BigDecimal('Infinity')
=> #<BigDecimal:7f8a6c548140,'Infinity',9(9)>
1.9.3p429 :026 > BigDecimal('-I...
How can I convert bigint (UNIX timestamp) to datetime in SQL Server?
...,'19700101 05:00:00:000')
If you want to go reverse, take a look at this http://wiki.lessthandot.com/index.php/Epoch_Date
share
|
improve this answer
|
follow
...
How does Angular $q.when work?
...plain me how does $q.when work in AngularJS?
I'm trying to analyse how $http work and found this:
1 Answer
...
How to calculate a logistic sigmoid function in Python?
...
It is also available in scipy: http://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.logistic.html
In [1]: from scipy.stats import logistic
In [2]: logistic.cdf(0.458)
Out[2]: 0.61253961344091512
which is only a costly wrapper (because it all...
How do you create a dictionary in Java? [closed]
...
There's an Abstract Class Dictionary
http://docs.oracle.com/javase/6/docs/api/java/util/Dictionary.html
However this requires implementation.
Java gives us a nice implementation called a Hashtable
http://docs.oracle.com/javase/6/docs/api/java/util/Hashtable.h...
Python: One Try Multiple Except
...d_4th_or_5th()
except Exception:
handle_all_other_exceptions()
See: http://docs.python.org/tutorial/errors.html
The "as" keyword is used to assign the error to a variable so that the error can be investigated more thoroughly later on in the code. Also note that the parentheses for the triple...
New lines inside paragraph in README.md
... are a new paragraph (same as here in stackoverflow)
You can test it with http://prose.io
share
|
improve this answer
|
follow
|
...
schema builder laravel migrations unique on two columns
...
Simply you can use
$table->primary(['first', 'second']);
Reference: http://laravel.com/docs/master/migrations#creating-indexes
As an example:
Schema::create('posts_tags', function (Blueprint $table) {
$table->integer('post_id')->unsigned();
$table->integer('tag...
Android: Background Image Size (in Pixel) which Support All Devices
...ll devices. For understanding multiple supporting screens you have to read
http://developer.android.com/guide/practices/screens_support.html
xxxhdpi: 1280x1920 px
xxhdpi: 960x1600 px
xhdpi: 640x960 px
hdpi: 480x800 px
mdpi: 320x480 px
ldpi: 240x320 px
...
Resource interpreted as stylesheet but transferred with MIME type text/html (seems not related with
...
i'd like to start by understanding the problem
Browsers make HTTP requests to servers. The server then makes an HTTP response.
Both requests and responses consist of a bunch of headers and a (sometimes optional) body with some content in it.
If there is a body, then one of the header...