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How to implement a custom AlertDialog View
In the Android docs on AlertDialog , it gives the following instruction and example for setting a custom view in an AlertDialog:
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What is the intent of the methods getItem and getItemId in the Android class BaseAdapter?
I'm curious about the purpose of the methods getItem and getItemId in the class Adapter in the Android SDK.
6 Answers
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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...le named test1, to which you want to add an auto-incrementing, primary-key id (surrogate) column. The following command should be sufficient in recent versions of PostgreSQL:
ALTER TABLE test1 ADD COLUMN id SERIAL PRIMARY KEY;
Older Versions of PostgreSQL
In old versions of PostgreSQL (prior ...
Create unique constraint with null columns
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Create two partial indexes:
CREATE UNIQUE INDEX favo_3col_uni_idx ON favorites (user_id, menu_id, recipe_id)
WHERE menu_id IS NOT NULL;
CREATE UNIQUE INDEX favo_2col_uni_idx ON favorites (user_id, recipe_id)
WHERE menu_id IS NULL;
This way, there can only be one combination of (user_...
Disable a Maven plugin defined in a parent POM
...or me when disabling Findbugs in a child POM:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<executions>
<execution>
<id>ID_AS_IN_PARENT</id> <!-- id is necessary ...
Entity Framework - Invalid Column Name '*_ID"
...answered Dec 18 '13 at 8:23
drewiddrewid
2,31522 gold badges1313 silver badges99 bronze badges
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Sequelize.js delete query?
... It's a pretty old question so at the time I guess Sequelize didn't have a destroy method surprisingly
– ncksllvn
Jun 16 '16 at 18:39
3
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Delete sql rows where IDs do not have a match from another table
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Using LEFT JOIN/IS NULL:
DELETE b FROM BLOB b
LEFT JOIN FILES f ON f.id = b.fileid
WHERE f.id IS NULL
Using NOT EXISTS:
DELETE FROM BLOB
WHERE NOT EXISTS(SELECT NULL
FROM FILES f
WHERE f.id = fileid)
Using NOT IN:
DELETE FROM BLOB
WHERE fi...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
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static $id = 0;
static $ct = 0;
$ct_last = $ct;
&...
android.widget.Switch - on/off event listener?
I would like to implement a switch button, android.widget.Switch (available from API v.14).
10 Answers
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