大约有 40,000 项符合查询结果（耗时：0.0602秒） [XML]
What is the equivalent of “none” in django templates?
...all are available within template tags and filters. None, False, the empty string ('', "", """""") and empty lists/tuples all evaluate to False when evaluated by if, so you can easily do
{% if profile.user.first_name == None %}
{% if not profile.user.first_name %}
A hint: @fabiocerqueira is right...
Quick way to create a list of values in C#?
...
Check out C# 3.0's Collection Initializers.
var list = new List<string> { "test1", "test2", "test3" };
share
|
improve this answer
|
follow
|
...
How to draw a custom UIView that is just a circle - iPhone app
How would I go about drawing a custom UIView that is literally just a ball (a 2D circle)? Would I just override the drawRect method? And can someone show me the code for drawing a blue circle?
...
Using print statements only to debug
...that, whenever you insert a debug print, you just put:
logger.debug("Some string")
You can use logger.setLevel at the start of the program to set the output level. If you set it to DEBUG, it will print all the debugs. Set it to INFO or higher and immediately all of the debugs will disappear.
You...
Parsing a JSON string in Ruby
I have a string that I want to parse in Ruby:
8 Answers
8
...
Editing dictionary values in a foreach loop
...fter you've finished iterating.
For example:
Copying keys first
List<string> keys = new List<string>(colStates.Keys);
foreach(string key in keys)
{
double percent = colStates[key] / TotalCount;
if (percent < 0.05)
{
OtherCount += colStates[key];
colS...
How to navigate a few folders up?
...
Other simple way is to do this:
string path = @"C:\Folder1\Folder2\Folder3\Folder4";
string newPath = Path.GetFullPath(Path.Combine(path, @"..\..\"));
Note This goes two levels up. The result would be:
newPath = @"C:\Folder1\Folder2\";
...
Convert floating point number to a certain precision, and then copy to string
...point number, say 135.12345678910 . I want to concatenate that value to a string, but only want 135.123456789 . With print, I can easily do this by doing something like:
...
How to check if a variable is an integer in JavaScript?
...
That depends, do you also want to cast strings as potential integers as well?
This will do:
function isInt(value) {
return !isNaN(value) &&
parseInt(Number(value)) == value &&
!isNaN(parseInt(value, 10));
}
With Bitwise op...
How to convert 1 to true or 0 to false upon model fetch
...
All you need is convert string to int with + and convert the result to boolean with !!:
var response = {"isChecked":"1"};
response.isChecked = !!+response.isChecked
You can do this manipulation in the parse method:
parse: function (response) {
...