大约有 42,000 项符合查询结果（耗时：0.0621秒） [XML]
how to disable DIV element and everything inside [duplicate]
...
disabled isn't a valid property for div.
– James Donnelly
Mar 21 '13 at 18:34
17
...
Add column to SQL Server
...le
ALTER TABLE [table]
ADD Column1 Datatype
E.g
ALTER TABLE [test]
ADD ID Int
If User wants to make it auto incremented then
ALTER TABLE [test]
ADD ID Int IDENTITY(1,1) NOT NULL
share
|
imp...
Django Rest Framework: Dynamically return subset of fields
...
You can override the serializer __init__ method and set the fields attribute dynamically, based on the query params. You can access the request object throughout the context, passed to the serializer.
Here is a copy&paste from Django...
Hiding textarea resize handle in Safari
...
You can override the resize behaviour with CSS:
textarea
{
resize: none;
}
or just simply
<textarea style="resize: none;">TEXT TEXT TEXT</textarea>
Valid properties are: both, horizontal, vertical, none
...
MySQL SELECT only not null values
...comparison operators = and <> both give UNKNOWN with NULL on either side of the expression.)
SELECT *
FROM table
WHERE YourColumn IS NOT NULL;
Just for completeness I'll mention that in MySQL you can also negate the null safe equality operator but this is not standard SQL.
SELECT *
FROM ...
How to clear an ImageView in Android?
...mething else in the view (you can check the ImageView code if you like, i didn't).
I think the best solution is:
viewToUse.setImageResource(android.R.color.transparent);
I like this solution the most cause there isn't anything tricky in reverting the state and it's also clear what it is doing.
...
Remove rows with all or some NAs (missing values) in data.frame
...
tidyr has a new function drop_na:
library(tidyr)
df %>% drop_na()
# gene hsap mmul mmus rnor cfam
# 2 ENSG00000199674 0 2 2 2 2
# 6 ENSG00000221312 0 1 2 3 2
df %>% drop_na(rn...
Best way to detect Mac OS X or Windows computers with JavaScript or jQuery
So I'm trying to move a "close" button to the left side when the user is on Mac and the right side when the user is on PC. Now I'm doing it by examining the user agent, but it can be too easily spoofed for reliable OS detection. Is there a surefire way to detect whether the OS on which the browser i...
How to make links in a TextView clickable?
...ntMethod() on the TextView object.
TextView t2 = (TextView) findViewById(R.id.text2);
t2.setMovementMethod(LinkMovementMethod.getInstance());
I removed most of the attributes on my TextView to match what was in the demo.
<TextView
android:id="@+id/text2"
android:layout_width="...
What causes imported Maven project in Eclipse to use Java 1.5 instead of Java 1.6 by default and how
...r-plugin appropriately, as I already suggested:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.1</version>
<configuration>
<source>1.6</source>
<target>1...