大约有 44,000 项符合查询结果（耗时：0.0505秒） [XML]
Android and setting alpha for (image) view alpha
...t, so strictly speaking the latter is not the exact XML counterpart to the former, but it's the counterpart to View.setAlpha(float). And as mentioned multiple times here already, android:alpha / View.setAlpha(float) are available as of API level 11 only.
– sschuberth
...
JSON.NET Error Self referencing loop detected for type
...rcular references. Put the following code in WebApiConfig.cs file:
config.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling
= Newtonsoft.Json.ReferenceLoopHandling.Ignore;
The simple fix will make serializer to ignore the reference which will cause a loop. However, it has limitat...
MySQL Multiple Joins in one query?
...
That's what the ON clause will tell you. The ON clause for the 2nd join (joining the third table) is joining dashboard_messages to images on the image_id field in each table. So, in this case it's A to B then B to C. It's under your control. You could make it A to B and A to C if...
How do I make and use a Queue in Objective-C?
...
I added a commented-out line at the beginning of dequeue for those that wish to return nil rather than raise an exception when trying to dequeue from an empty queue. IMO, following the NSMutableArray behavior of raising an exception is more consistent with Cocoa. After all, you can...
Why do I need to override the equals and hashCode methods in Java?
...als(). Failure to do so will result in a violation of the general contract for Object.hashCode(), which will prevent your class from functioning properly in conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable.
Let's try to understand it with an example of what wou...
jQuery get selected option value (not the text, but the attribute 'value')
...you could use simply this.value to get the selected option value. See demo for more options.
//ways to retrieve selected option and text outside handler
console.log('Selected option value ' + $('select option').filter(':selected').val());
console.log('Selected option value ' + $('select opti...
Foreign key constraints: When to use ON UPDATE and ON DELETE
...ve advanced constraints like you would have in postgreSQL but at least the foreign key constraints are quite advanced.
We'll take an example, a company table with a user table containing people from theses company
CREATE TABLE COMPANY (
company_id INT NOT NULL,
company_name VARCHAR(50),
...
Oracle “Partition By” Keyword
...
The PARTITION BY clause sets the range of records that will be used for each "GROUP" within the OVER clause.
In your example SQL, DEPT_COUNT will return the number of employees within that department for every employee record. (It is as if you're de-nomalising the emp table; you still retur...
How to clear a notification in Android
...er.cancel(NOTIFICATION_ID);
In this code there is alway the same id used for notifications. If you have different notifications that need to be canceled you have to save the ids that you used to create the Notification.
sh...
How do I get textual contents from BLOB in Oracle SQL
...ant to store text in CLOB/NCLOB columns instead of BLOB, which is designed for binary data (your query would work with a CLOB, by the way).
The following query will let you see the first 32767 characters (at most) of the text inside the blob, provided all the character sets are compatible (original...