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Which annotation should I use: @IdClass or @EmbeddedId
...argue that this differs from a more natural language like the one promoted by IdClass. But most of the times understanding right from the query that a given field is part of the composite key is of invaluable help.
share
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Maven is not working in Java 8 when Javadoc tags are incomplete
...n a way that is easily linked back to the
source code.
This is enabled by default, and will run a whole lot of checks before generating Javadocs. You need to turn this off for Java 8 as specified in this thread. You'll have to add this to your maven configuration:
<profiles>
<profile...
Read Excel File in Python
... skip the first row which isn't needed for row in range(1, s.nrows) - done by using range from 1 onwards (not the implicit 0). You then use zip to step through the rows holding 'name' as the header of the column.
from xlrd import open_workbook
wb = open_workbook('Book2.xls')
values = []
for s in w...
How to handle anchor hash linking in AngularJS
..."_self" is definitely the best answer (no need to double #, as pointed out by Christophe P). This works no matter if Html5Mode is on or off.
– newman
Jan 16 '16 at 16:54
3
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MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...t hostname:port
--ipv6 enable IPv6 support (disabled by default)
-u [ --username ] arg username
-p [ --password ] arg password
--dbpath arg directly access mongod database files in the given
path, instead of connecting ...
关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...如下：
socket_server.php
<?php
/**
* SocketServer Class
* By James.Huang <shagoo#gmail.com>
**/
set_time_limit(0);
class SocketServer
{
private static $socket;
function SocketServer($port)
{
global $errno, $errstr;
if ($port < 1...
MySQL Orderby a number, Nulls last
Currently I am doing a very basic OrderBy in my statement.
12 Answers
12
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When to use single quotes, double quotes, and backticks in MySQL
... for string values like in the VALUES() list. Double quotes are supported by MySQL for string values as well, but single quotes are more widely accepted by other RDBMS, so it is a good habit to use single quotes instead of double.
MySQL also expects DATE and DATETIME literal values to be single-quo...
Is Redis just a cache?
...mple, a Question is a map with fields {id, title, date_asked, votes, asked_by, status}. Similarly, an Answer is a map with fields {id, question_id, answer_text, answered_by, votes, status}. Similarly, we can model a user object.
Each of these objects can be directly stored in Redis as a Hash. To ge...
How can I update window.location.hash without jumping the document?
...
There is a workaround by using the history API on modern browsers with fallback on old ones:
if(history.pushState) {
history.pushState(null, null, '#myhash');
}
else {
location.hash = '#myhash';
}
Credit goes to Lea Verou
...