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JSON serialization of Google App Engine models
...encoder as in the following python:
import datetime
from google.appengine.api import users
from google.appengine.ext import db
from django.utils import simplejson
class jsonEncoder(simplejson.JSONEncoder):
def default(self, obj):
if isinstance(obj, datetime.datetime):
retur...
How to change Vagrant 'default' machine name?
...ok's (commenter) input
Set hostname (BONUS)
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
config.vm.hostname = "buzbar"
end
Comments: This sets the hostname inside the VM. This would be the output of hostname command in the VM and also this is what's visible in the prompt like vagrant@...
What is the difference between print and puts?
...
The API docs give some good hints:
print() → nil
print(obj, ...) → nil
Writes the given object(s) to ios. Returns nil.
The stream must be opened for writing. Each given object that isn't a
string will be ...
Why does volatile exist?
...n.
For example, this is how InterlockedIncrement is declared in the Win32 API:
LONG __cdecl InterlockedIncrement(
__inout LONG volatile *Addend
);
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Handling optional parameters in javascript
...uments = the original arguments to the function defined in your javascript API.
* config = describe the argument type
* - Class - specify the type (e.g. String, Number, Function, Array)
* - [Class/function, boolean, default] - pass an array where the first value is a class or a function...
* ...
How can I shrink the drawable on a button?
...
height, width only work in API level 23 and higher. Not supported backward.
– Palak Darji
Aug 14 '16 at 11:48
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程序员才能听得懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...程序员 就吧她放了，另一个问他：Why，他回答说：没有API。
20、有一个小伙子在一个办公大楼的门口抽着烟，一个妇女路过他身边，并对他说，“你知道不知道这个东西会危害你的健康？我是说，你有没有注意到香烟盒上的...
How to pull a random record using Django's ORM?
...use:
MyModel.objects.order_by('?').first()
It is documented in QuerySet API.
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Multiple linear regression in Python
...ked it with R and it works correct.
import numpy as np
import statsmodels.api as sm
y = [1,2,3,4,3,4,5,4,5,5,4,5,4,5,4,5,6,5,4,5,4,3,4]
x = [
[4,2,3,4,5,4,5,6,7,4,8,9,8,8,6,6,5,5,5,5,5,5,5],
[4,1,2,3,4,5,6,7,5,8,7,8,7,8,7,8,7,7,7,7,7,6,5],
[4,1,2,5,6,7,8,9,7,8,7,8,7,7,7,7,7,7,6,6,4...
Adding a library/JAR to an Eclipse Android project
... it is marked as a library project.
Also make sure it is build with Google API support, if not you will get compile errors.
Then, in right click on your main project in the project explorer.
Select properties, then select Android on the left.
In the library section below, click "Add"..
The mapview...