大约有 47,000 项符合查询结果（耗时：0.0536秒） [XML]
Improve INSERT-per-second performance of SQLite
...ple threads (connection per-thread).
First find the items, in the table:
SELECT COUNT(*) FROM table
then read in pages (LIMIT/OFFSET):
SELECT * FROM table ORDER BY _ROWID_ LIMIT <limit> OFFSET <offset>
where and are calculated per-thread, like this:
int limit = (count + n_threa...
Visual Studio move project to a different folder
...olution in VS2012
Move your project to the new location
Open your solution
Select the project that failed to load
In the Properties tool window, there an editable “File path” entry that allows you to select the new project location
Set the new path
Right click on the project and click reload
...
ArrayList initialization equivalent to array initialization [duplicate]
...
The selected answer is: ArrayList<Integer>(Arrays.asList(1,2,3,5,8,13,21));
However, its important to understand the selected answer internally copies the elements several times before creating the final array, and that th...
XDocument or XmlDocument
...er>
XElement customersElement = new XElement("customers",
customers.Select(c => new XElement("customer",
new XAttribute("name", c.Name),
new XAttribute("lastSeen", c.LastOrder)
new XElement("address",
new XAttribute("town", c.Town),
new XAttr...
How do I create ColorStateList programmatically?
... try any of those solutions, pay attention to the order the states like in selector.xml!
– Anton Makov
Oct 4 '19 at 12:34
|
show 2 more comm...
mysql create user if not exists
...
I use
SELECT EXISTS (SELECT DISTINCT user FROM mysql.user WHERE user = "username") as is_user
should return 1 if exists or 0 if it does not
share
...
Underlining text in UIButton
...
You can do it in the interface builder itself.
Select the attribute inspector
Change the title type from plain to attributed
Set appropriate font size and text alignment
Then select the title text and set the font as underlined
...
Add IIS 7 AppPool Identities as SQL Server Logons
...it does not appear to be a valid AD name so when you search for it in the "Select User or Group" dialog box, it won't show up (actually, it will find it, but it will think its an actual system account, and it will try to treat it as such...which won't work, and will give you the error message about ...
Generate C# class from XML
... file as classes.
Copy your XML file's content to clipboard
In editor, select place where you want your classes to be pasted
From the menu, select EDIT > Paste Special > Paste XML As Classes
share
|
...
How to execute a raw update sql with dynamic binding in rails
...ch less efficient, isn't it. Doesn't this trade one update statement for a select, bring the records into rails memory, update each record and send an update statement back for each record. 1 update vs 1 per record and much bandwidth, etc.? Does AR optimize this or not? I don't think it does.
...