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Disable ActiveRecord for Rails 4
...n without a database:
rails new myApp --skip-active-record
Notice the extra hyphen '-' as opposed to previous versions of Rails.
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Lisp in the real world
...ions for business process modelling. it's some random lisp code with a few extra process-related primitives and a few constraints. it can stop at random points in the code and fall asleep (get comitted into the database) while it waits for some external event.
is it practical or academic? you decid...
How to change an input button image using CSS?
...
Here's a simpler solution but with no extra surrounding div:
<input type="submit" value="Submit">
The CSS uses a basic image replacement technique. For bonus points, it shows using an image sprite:
<style>
input[type="submit"] {
border...
Unwanted padding around an ImageView
...
those extra padding is autogenerated since the android would try to get the original aspect ratio. please try below
scaletype = "fitCenter"
android:adjustViewBounds="true"
android:layout_height="wrap_content"
...
Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...SION_MAJOR=5
MYSQL_VERSION_MINOR=1
MYSQL_VERSION_PATCH=37
MYSQL_VERSION_EXTRA=
再次运行configure脚本，应该就OK了，把剩下的步骤进行完：
shell> make
shell> make install
接着需要配置一下HandlerSocket，编辑MySQL配置文件，加入如下内容：
[mysqld]
l...
TextView Marquee not working [duplicate]
... android:id="@+id/textView_News_HeadLine"
style="@style/black_extra_large_heading_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginLeft="8dp"
...
What's the difference between streams and datagrams in network programming?
...ets
stream (TCP, order and delivery guaranteed,no duplication,no length or char boundaries for data,connection-oriented,reliable, concurrency)
datagram(UDP,packet-based, connectionless, datagram size limit, data can be lost or duplicated, order not guaranteed,not reliable)
raw (direct access to lowe...
What is the difference between return and return()?
...t starts the return statement, not a function.
As has been mentioned, the extra parentheses affect evaluation order, but are not used to "execute" the function named return. That is why these lines work without any problems:
return (1);
var a = (1);
They are, in effect, identical to these lines:...
Python function overloading
...mplement in Python, in so many different ways, but I would go with:
class Character(object):
# your character __init__ and other methods go here
def add_bullet(self, sprite=default, start=default,
direction=default, speed=default, accel=default,
curve=d...
What is the difference between atan and atan2 in C++?
...ple values is (-pi,pi] but atan2 has the range [-pi,pi] so it includes one extra value -pi from another branch due to atan2(-0.0,x) for x<0.
– Z boson
Jul 2 '15 at 11:27
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