大约有 42,000 项符合查询结果（耗时：0.0363秒） [XML]
How to determine whether a Pandas Column contains a particular value
...s column that has a particular value. I tried to do this with if x in df['id'] . I thought this was working, except when I fed it a value that I knew was not in the column 43 in df['id'] it still returned True . When I subset to a data frame only containing entries matching the missing id df[df...
Gray out image with CSS?
...set that to be gray (change the alpha to get the effect).
html:
<div id="wrapper">
<img id="myImage" src="something.jpg" />
</div>
css:
#myImage {
opacity: 0.4;
filter: alpha(opacity=40); /* msie */
}
/* or */
#wrapper {
opacity: 0.4;
filter: alpha(opacit...
How do I get the value of a textbox using jQuery?
...
There's a .val() method:
If you've got an input with an id of txtEmail you can use the following code to access the value of the text box:
$("#txtEmail").val()
You can also use the val(string) method to set that value:
$("#txtEmail").val("something")
...
adb not finding my device / phone (MacOS X)
Doing Android development on a Mac and this very new phone I have doesn't show up in the devices list in adb . Lots of other phones and devices work fine for me so I know my setup is good.
...
Ways to implement data versioning in MongoDB
...t contain a dictionary of time-stamped diffs. Something like this:
{
_id : "id of address book record",
changes : {
1234567 : { "city" : "Omaha", "state" : "Nebraska" },
1234568 : { "city" : "Kansas City", "state" : "Missouri" }
}
}
To make ...
Using an RDBMS as event sourcing storage
...h EventSource corresponds to an actual Aggregate Root.)
Table Events:
Id [uniqueidentifier] NOT NULL,
TimeStamp [datetime] NOT NULL,
Name [varchar](max) NOT NULL,
Version [varchar](max) NOT NULL,
EventSourceId [uniqueidentifier] NOT NULL,
Sequence [bigint],
Data [nva...
Select datatype of the field in postgres
... ?
For example
I have the following table,
student_details (
stu_id integer,
stu_name varchar(30 ),
joined_date timestamp
);
...
Programmatically create a UIView with color gradient
I'm trying to generate a view with a gradient color background (A solid color to transparent) at runtime. Is there a way of doing that?
...
How to Loop through items returned by a function with ng-repeat?
...ollowing code report errors:
10 $digest() iterations reached. Aborting! jsfiddle is here: http://jsfiddle.net/BraveOstrich/awnqm/
...
Can you nest html forms?
...
I agree with what others have said. This limitation seems arbitrary and harmful.
– aroth
Jul 7 '14 at 6:43
15
...