大约有 44,000 项符合查询结果（耗时：0.0722秒） [XML]
What is the difference between Fragment and FragmentActivity?
...to HoneyComb (3.0). If you want to use Fragments in an app targeting a platform version prior to HoneyComb, you need to add the Support Package to your project and use the FragmentActivity to hold your Fragments. The FragmentActivity class has an API for dealing with Fragments, whereas the Activity ...
Use of def, val, and var in scala
...this method only without () because it is defined as parameterless method. For empty-paren method, you can call it with or without '()'. If you simply write:
person
then you are calling this method (and if you don't assign the return value, it will just be discarded). In this line of code:
perso...
How to truncate string using SQL server
...
@KM. added a version that will check for string length
– Taryn♦
Feb 28 '13 at 20:12
2
...
setuptools: package data folder location
...live on a user's
system, which may be Windows, Mac, Linux, some mobile platform, or inside an Egg. You can
always find the directory data relative to your Python package root, no matter where or how it is installed.
For example, if I have a project layout like so:
project/
foo/
__init_...
When should I use @classmethod and when def method(self)?
While integrating a Django app I have not used before, I found two different ways used to define functions in classes. The author seems to use them both very intentionally. The first one is one I myself use a lot:
...
datetime dtypes in pandas read_csv
...ata types upon reading in the file, but datetimes appear to be a problem. For instance:
4 Answers
...
PHP foreach change original array values
...you need it and test the results.
I would recommend doing the following:
foreach ($fields as $key => $field) {
if ($field['required'] && strlen($_POST[$field['name']]) <= 0) {
$fields[$key]['value'] = "Some error";
}
}
So basically use $field when you need the value...
View a file in a different Git branch without changing branches
...
@GregBurghardt what works for me is something similar to vim -c "set syntax=html" -
– raphaëλ
Nov 13 '14 at 10:54
2
...
Convert a RGB Color Value to a Hexadecimal String
...
You can use
String hex = String.format("#%02x%02x%02x", r, g, b);
Use capital X's if you want your resulting hex-digits to be capitalized (#FFFFFF vs. #ffffff).
share
|...
What does the “~” (tilde/squiggle/twiddle) CSS selector mean?
Searching for the ~ character isn't easy. I was looking over some CSS and found this
5 Answers
...