大约有 31,840 项符合查询结果（耗时：0.0266秒） [XML]
PHP global in functions
... have a variable holding 1 somewhere outside. But when you pull in global $one inside the function, you couple to the global scope and expect it to have a variable of that defined somewhere. The function is no longer independent then.
Even worse, when you are changing globals inside your function,...
diff to output only the file names
...file names of what is different. This includes anything that is present in one directory and not the other or vice versa, and text differences.
...
How can I insert values into a table, using a subquery with more than one result?
...
If you are inserting one record into your table, you can do
INSERT INTO yourTable
VALUES(value1, value2)
But since you want to insert more than one record, you can use a SELECT FROM in your SQL statement.
so you will want to do this:
INSER...
Delete an element from a dictionary
...a time when i wanted copies of the dictionary, i've always relied on 'everyones' copy being the same. great point.
– tMC
Apr 30 '11 at 21:38
30
...
Real world use of JMS/message queues? [closed]
...code would publish a message onto a JMS queue which includes an order id. One part of your application listening to the queue may respond to the event by taking the orderId, looking the order up in the database and then place that order with another third party system. Another part of your applica...
Explanation of the UML arrows
...assifiers.
13: Import: A relationship between packages, indicating that one
package includes all the definitions of another.
14: Dependency: The definition or implementation of the dependent classifier might change if
the classifier at the arrowhead end is changed.
15: Realization: The class i...
What is the difference between “text” and new String(“text”)?
... String s = "text"; may reuse an instance from the string constant pool if one is available.
You very rarely would ever want to use the new String(anotherString) constructor. From the API:
String(String original) : Initializes a newly created String object so that it represents the same sequenc...
MySQL pagination without double-querying?
...g SQL_CALC_FOUND_ROWS with ORDER BY and LIMIT, according to the bug I mentioned.
– staticsan
May 4 '09 at 4:30
5
...
Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. Manifest definition do
...still receiving the error above. It wasn't until I made the changes I mentioned that I was able to get it to work properly.
– CraigV
Jul 1 '14 at 17:56
...
Why are there no ++ and -- operators in Python?
...ine.
It's not a decision of whether it makes sense, or whether it can be done--it does, and it can. It's a question of whether the benefit is worth adding to the core syntax of the language. Remember, this is four operators--postinc, postdec, preinc, predec, and each of these would need to have i...