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【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
...图的边界，值是一个包含了西北和东南坐标的嵌套列表，格式为((北西)(南东))CenterFromString地图中心Set the initial center coordinate of the map. The value is specified as a comma-separated pair of decimal latitude and longitude coordinates, for example, 42.359144, -71....
What's so bad about Template Haskell?
...llows it; if you find a function that generates a database interface and a JSON serialization interface, you can't say "No, I only want the database interface, thanks; I'll roll my own JSON interface"
Run time. TH code takes a relatively long time to run. The code is interpreted anew every time a fi...
提升大数据分析思想，拥抱大数据未来 - 资讯 - 清泛网 - 专注C/C++及内核技术
...一的目的，而是或许已经成为延伸至多种功能用途的数据处理了。作为一种可再生资源，其价值的衡量不应是视其底线而定，而是应该将其视为一种不仅能带来价值增长，而且能够提供价值增长的机会的资产。数据作为商业的一...
moving changed files to another branch for check-in
... answered Apr 1 '19 at 3:45
JSON C11JSON C11
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How to set the prototype of a JavaScript object that has already been instantiated?
... 12 years ago.
... the lack of stratification is a problem (consider JSON data with a key "__proto__"). And worse, the mutability means implementations must check for cyclic prototype chains in order to avoid ilooping. [constant checks for infinite recursion are required]
Finally, mutatin...
C/C++中退出线程的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...释放。
一旦线程不再运行，系统中就没有别的线程能够处理该线程的句柄。然而别的线程可以调用GetExitcodeThread来检查由hThread标识的线程是否已经终止运行。如果它已经终止运行，则确定它的退出代码：
函数原型：
BOOL Get...
How do I include a JavaScript file in another JavaScript file?
...JS-style module system ["CJS"]) you either use "type": "module" in package.json or give the files the extension .mjs. (Similarly, modules written with Node.js's previous CJS module can be named .cjs if your default is ESM.)
Using package.json:
{
"type": "module"
}
Then module.js:
export fun...
Convert Django Model object to dict with all of the fields intact
...eous!
I would add, though, a condition for datefields in order to make it JSON friendly.
Bonus Round
If you want a django model that has a better python command-line display, have your models child class the following:
from django.db import models
from django.db.models.fields.related import Many...
Is there documentation for the Rails column types?
...blob", limit: 65535 },
boolean: { name: "tinyint", limit: 1 },
json: { name: "json" },
}
# Maps logical Rails types to MySQL-specific data types.
def type_to_sql(type, limit = nil, precision = nil, scale = nil, unsigned = nil)
sql = case type.to_s
when 'integer'
...
When do you use POST and when do you use GET?
... what if I want to view data, but I need to pass ana array or a JSON as a a parameter, is still viable to stringify the array and send it as GET, or in this case is it okay to just use POST and send the array in the body?
– A.J Alhorr
Aug 25 at 12:23...