大约有 5,883 项符合查询结果（耗时：0.0192秒） [XML]
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'db'
...'localhost';
Syntax:
mysql> grant all privileges on `database_name`.`table_name` to 'user_name'@'hostname';
Note:
hostname can be IP address, localhost, 127.0.0.1
In database_name/table_name, * means all databases
In hostname, to specify all hosts use '%'
Step [3]: Get ou...
How to display a dynamically allocated array in the Visual Studio debugger?
...Memory). Specify a memory start address =
m4x4
This displays data in a table, which is better for two and three dimensional matrices:
Right-click on the Memory window to determine how the binary data is visualized. Choices are limited to integers, floats and some text encodings.
...
Disable migrations when running unit tests in Django 1.7
...been run, the "migrate" command treats
an app as unmigrated, and creates tables directly from the models just
like syncdb did in 1.6. I defined a new settings module just for unit
tests called "settings_test.py", which imports * from the main
settings module and adds this line:
MIGRATIO...
How to query MongoDB with “like”?
... Actually, it depends. If the query doesn't use an index, and must do a table scan, then it can certainly be expensive. If you're doing a 'starts with' regex query, then that can use an index. Best to run an explain() to see what's happening.
– Kyle Banker
J...
Setting direction for UISwipeGestureRecognizer
...Apple saying that the behavior works as was intended.
So for example in a table view you can swipe left or right in a table view cell to trigger 'delete' (this would have directions of the swipe gesture set to left and right)
This means that the original workaround is the way it's supposed to be u...
Double exclamation points? [duplicate]
... then it may not be 0 but some other falsy value. See the following truth table:
Truth Table for javascript
'' == '0' // false
0 == '' // true
0 == '0' // true
false == 'false' // false
false == '0' // true
fa...
How to load a xib file in a UIView
...
make sure check mark "also create XIB file"
I would like to perform with tableview so I choosed subclass UITableViewCell
you can choose as your requerment
XIB file desing as your wish (RestaurantTableViewCell.xib)
we need to grab the row height to set table each row hegiht
Now! need ...
how to check if object already exists in a list
...dictionary approach would be quite good assuming:
The list is relatively stable (not a lot of inserts/deletions, which dictionaries are not optimized for)
The list is quite large (otherwise the overhead of the dictionary is pointless).
If the above are not true for your situation, just use the met...
When should I really use noexcept?
...of overhead"… No, this should be implemented by not generating exception tables for such a function, which the exception dispatcher should catch and then bail out.
– Potatoswatter
May 29 '12 at 8:55
...
Creating a “logical exclusive or” operator in Java
...me result. Therefore, no need for distinct operators. The simplified truth table for a XOR operator is X ^ !X = 1. You cannot short circuit an input in XOR because you have to determine whether the inputs are different. It is a lot easier to understand if you know the fabrication of the actual XOR g...