大约有 13,300 项符合查询结果(耗时:0.0399秒) [XML]
Why not use Double or Float to represent currency?
...ntation as an integer times a power of 2. In fact, the only multiples of 0.01 between 0 and 1 (which are significant when dealing with money because they're integer cents) that can be represented exactly as an IEEE-754 binary floating-point number are 0, 0.25, 0.5, 0.75 and 1. All the others are off...
Java Date vs Calendar
.... For example, a constant Date in the application (examples: the zero 1970/01/01, or an applicative END_OF_TIME that you set to 2099/12/31 ; those are very useful to replace null values as start time and end time, especially when you persist them in the database, as SQL is so peculiar with nulls).
...
Compare two DataFrames and output their differences side-by-side
... Date
111 Jack True 2013-05-01 12:00:00
112 Nick 1.11 False 2013-05-12 15:05:23
Zoe 4.12 True ''',
'''\
id Name score ...
How to get the number of days of difference between two dates on mysql?
... the calculation
In your case, you'd use :
mysql> select datediff('2010-04-15', '2010-04-12');
+--------------------------------------+
| datediff('2010-04-15', '2010-04-12') |
+--------------------------------------+
| 3 |
+--------------------------------...
How to set a default value for a datetime column to record creation time in a migration?
... like this:
create table foo ( starts_at timestamp not null default '2009-01-01 00:00:00');
but I think that it is not what you want.
share
|
improve this answer
|
follow
...
“Rate This App”-link in Google Play store app on the phone
... |
edited Aug 10 at 12:01
Kishan Solanki
6,73722 gold badges3939 silver badges4444 bronze badges
answ...
Input with display:block is not a block, why not?
...nts' padding and/or borders.
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>Cross-browser CSS box-sizing:border-box&...
How to add items to a spinner in Android?
...
XML file:
<Spinner
android:id="@+id/Spinner01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Java file:
public class SpinnerExample extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
...
Unresolved specs during Gem::Specification.reset:
...
answered Jan 7 '15 at 6:01
Pieter van der MerwePieter van der Merwe
1,95811 gold badge1212 silver badges1010 bronze badges
...
Maven Install on Mac OS X
...vn -version and see some output like this:
Apache Maven 3.0.3 (r1075438; 2011-02-28 12:31:09-0500)
Maven home: /usr/share/maven
Java version: 1.6.0_29, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
O...
