大约有 43,000 项符合查询结果（耗时：0.0494秒） [XML]
Find index of a value in an array
... return -1;
}
And you can use LINQ as well:
int keyIndex = words
.Select((v, i) => new {Word = v, Index = i})
.FirstOrDefault(x => x.Word.IsKey)?.Index ?? -1;
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Could not load file or assembly … An attempt was made to load a program with an incorrect format (Sy
... 32-Bit Applications.
Steps
Open IIS Manager
Click on Application Pools
Select whatever application pool you are using
From right pane, click Advanced Settings...
Set Enable 32-Bit Applications to True
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Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...CIT) and (utf8_unicode_ci,IMPLICIT) for operation '='
$this->db->select("users.username as matric_no, CONCAT(users.surname,
' ',
users.first_name, ' ', users.last_name) as fullname")
->join('users', 'users.username=classroom_students.matric_no', 'left')
...
CSS: background image on background color
I have panel which I colored blue if this panel is being selected (clicked on it). Additionally, I add a small sign ( .png image) to that panel, which indicates that the selected panel has been already selected before.
...
Using .text() to retrieve only text not nested in child tags
...eference:
$("#foo")
.clone() //clone the element
.children() //select all the children
.remove() //remove all the children
.end() //again go back to selected element
.text();
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Use tnsnames.ora in Oracle SQL Developer
...s shown in below image.
In the Preferences options expand Database --> select Advanced --> under "Tnsnames Directory" --> Browse the directory where tnsnames.ora present.
Then click on Ok,
as shown in below diagram.
tnsnames.ora available at Drive:\oracle\product\10x.x.x\client_x\NETWORK\A...
Android Studio: how to remove/update the “Created by” comment added to all new classes?
...lates in the left hand pane.
You have two ways you can change this...
1) Select the Includes tab and edit the Created by... text directly.
2) Select the Templates tab and edit the #parse("File Header.java") line for any template that you desire.
Personally I followed option 1) and made the d...
Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?
... I'll have to pass a couple objects to the detail view. But do I use didSelectRowAtIndex or -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender ?
...
How to determine MIME type of file in android?
...
If the media is selected from android gallery then TYPE is returned. If selected from File Manager then null is returned.
– Rahul Rastogi
Aug 27 '14 at 12:34
...
What is Scala's yield?
...in F# would be
[ for a in args -> a.toUpperCase ]
or
from a in args select a.toUpperCase
in Linq.
Ruby's yield has a different effect.
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