大约有 45,000 项符合查询结果（耗时：0.0890秒） [XML]
Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive
...followed by IIS in window 7. when building a website in .net framework 4.0 and convert this into application in IIS then its shows this error
...
leading zeros in rails
I have fields hr and min , both integers in my application. For hr field, if the user enters "1" I would like Rails to automatically pad it to "01" before saving it to the database. Also for the min field if the user enter "0" it should put in as "00".
...
There can be only one auto column
... MySQL says "Incorrect table definition; there can be only one auto column and it must be defined as a key" So when I added primary key as below it started working:
CREATE TABLE book (
id INT AUTO_INCREMENT NOT NULL,
accepted_terms BIT(1) NOT NULL,
accepted_privacy BIT(1) NOT NULL,
prim...
Difference between database and schema
What's the difference between a Database and a Schema in SQL Server? Both are the containers of tables and data.
5 Answers
...
argparse module How to add option without any argument?
...you already have in your code. You just have to replace the commented line and then you can access the value with args.simulate.
– Felix Kling
Mar 11 '11 at 10:34
add a commen...
python numpy machine epsilon
I am trying to understand what is machine epsilon. According to the Wikipedia, it can be calculated as follows:
3 Answers
...
How to @link to a Enum Value using Javadoc
... edited Sep 9 '19 at 13:20
Andrew Tobilko
42.5k1111 gold badges6666 silver badges119119 bronze badges
answered Oct 5 '09 at 17:20
...
Select records from NOW() -1 Day
...t may be slightly different than you expect.
NOW() returns a DATETIME.
And INTERVAL works as named, e.g. INTERVAL 1 DAY = 24 hours.
So if your script is cron'd to run at 03:00, it will miss the first three hours of records from the 'oldest' day.
To get the whole day use CURDATE() - INTERVAL 1...
In C++, if throw is an expression, what is its type?
...
According to the standard, 5.16 paragraph 2 first point, "The second or the third operand (but not both) is a throw-expression (15.1); the result is of the type of the other and is an rvalue." Therefore, the conditional operator doesn't care w...
Gradle alternate to mvn install
...
apply plugin: "maven" and $sdk> gradle install this will install the sdk into .m2 right ? And mavenLocal() also gets info from .m2 and .gradle ?
– Rajmahendra
May 26 '11 at 10:01
...