大约有 40,000 项符合查询结果(耗时:0.0454秒) [XML]
Jquery mouseenter() vs mouseover()
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@FredrickGauss - I'm using the + operator to coerce the string returned from el.text() to a number. Did I need to? No. In this case, the next statement that uses n would also coerce it to a number. So, why did I use it? I'm not sure... this was 2 years ago. It's a good habit. It ...
Error 908: Permission Receive SMS - #5 by Taifun - MIT App Inventor Help - MIT App Inventor Community
...eDirect and MakePhoneCallDirect blocks that do the old behavior that needs extra permissions. We chose to have the existing SendMessage and MakePhoneCall blocks launch the default apps via Intents , as recommended by Google policy, which should work for most people.
For receiving, we made it so tha...
How can I make Bootstrap columns all the same height?
...where as the wildcard shown will match any class with col- anywhere in the string, possibly having undesired effects on styles where you may have used the convention col-. (i.e. stuff-col-morestuff).
– LiquaFoo
Jun 5 '14 at 16:46
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SELECT DISTINCT on one column
...l shown), this is the correct query:
declare @TestData table (ID int, sku char(6), product varchar(15))
insert into @TestData values (1 , 'FOO-23' ,'Orange')
insert into @TestData values (2 , 'BAR-23' ,'Orange')
insert into @TestData values (3 , 'FOO-24' ,'Apple')
insert into @Tes...
How can I explode and trim whitespace?
For example, I would like to create an array from the elements in this string:
11 Answers
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How can I pass a parameter to a Java Thread?
...f a Runnable or Thread class
class MyThread extends Thread {
private String to;
public MyThread(String to) {
this.to = to;
}
@Override
public void run() {
System.out.println("hello " + to);
}
}
public static void main(String[] args) {
new MyThread("wo...
Exception.Message vs Exception.ToString()
...wever, I read an article which states that it's better to use Exception.ToString() . With the latter, you retain more crucial information about the error.
...
EF Code First “Invalid column name 'Discriminator'” but no inheritance
...as an attribute of the derived class.
Example:
class Person
{
public string Name { get; set; }
}
[NotMapped]
class PersonViewModel : Person
{
public bool UpdateProfile { get; set; }
}
Now, even if you map the Person class to the Person table on the database, a "Discriminator" column wil...
Understanding colors on Android (six characters)
...th.round(i * 100) / 100.0d;
int alpha = (int) Math.round(i * 255);
String hex = Integer.toHexString(alpha).toUpperCase();
if (hex.length() == 1)
hex = "0" + hex;
int percent = (int) (i * 100);
System.out.println(String.format("%d%% — %s", percent, hex));
}
Output:
10...
how to exclude null values in array_agg like in string_agg using postgres?
...s g
GROUP BY g.id
) s
Or, simpler and may be cheaper, using array_to_string which eliminates nulls:
SELECT
g.id,
array_to_string(
array_agg(CASE WHEN g.canonical = 'Y' THEN g.users ELSE NULL END)
, ','
) canonical_users,
array_to_string(
array_agg(CASE ...
