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Five .ipynb Language Tutorial

Thanks for contribution 🤗:

https://github.com/ShixiangWang/iLearning/blob/master/study/Python/learnPython/搞定Python基本操作.ipynb https://github.com/rajathkmp/Python-Lectures/blob/master/03.ipynb https://jupyter.org/try-jupyter/lab/index.html?fromURL=https://gist.githubusercontent.com/kenjyco/69eeb503125035f21a9d/raw/learning-python3.ipynb https://github.com/jamwine/Python-Beginners-Guide/blob/master/Learn%20Python%20in%20Jupyter%20Notebook.ipynb https://github.com/cs231n/cs231n.github.io/blob/master/python-colab.ipynb

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#!ipy -i
def cat():
  x=yield '1st'
  while True:
    x=yield x

z=cat(); next(z) #x=() 待执行
[z.send(n) for n in range(10)]

'''

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#include<bits/stdc++.h>
#define let auto
#define inc(A,B,i) for(let i=A;i<=B;i++)
#define NO NULL

#define _(T,meth, ...) T##_##meth(__VA_ARGS__)
#define Col(...) typedef struct{__VA_ARGS__;} T;

#define T Str

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N2=(x,y=x)=>new _N2(new Float32Array(2),x,y)

data=(kv,T)=>{
  let s=(T+''), sub=(s,f)=>s.replace(/(\w+)/g,f), kvs=kv.split(','), cg='',
  vec=(k,v)=>`${k.substr(1)}(v){let a=this._,i=${kvs.length-1};while(i-->0)a[i]${k[0]}=${v}; return this}`
  if(kvs[0]=='_') {
    '+p *pp -m /mm'.split(' ').forEach(k=> cg+=vec(k,'v')+'_'+vec(k,'v._[i]'))
    kvs.slice(1).forEach((k,i)=> cg+=`get ${k}(){return this._[${i}]}set ${k}(v){this._[${i}]=v}`) 
  }
  T=eval(sub(s,(m,k)=>kvs.includes(k)?`this.${k}`:k).replace('{\n',`{constructor(${kv}){${sub(kv, `this.$1=$1`)}}`+cg))(); this[T.name]=T

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#!/bin/env bash
#kotlinc -include-runtime catdo.kt -d ~/catdo.jar; install -Dm755 -t ~ catdo

catdo() { local k=$1;set -- "$PWD0" "${@:2}"; printf "%s\0" "$@" >buf; printf "%08x" $(wc -c <buf)|basenc --base16 -d >>$k; cat buf>>$k
  ruby -e 'k,bf=ARGV; while File.read(bf)!=k do end' $k buf; cat $k
}
[ -z $2 ] &&env JAVACMD=$PWD/catdo $1 &&exit

j=$(echo "$@"|sed -E 's/(\S*Main)/CatdoKt \1/;s/-cp /\0catdo.jar:/')
read f fl <<<$(sed -E 's/.* (\S*Main)(.*)/\1.text \2/'<<<$j)

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请写一个 type inference ，正确判别以下表达式

toAST.run {
  `+`(+1, +1)
  `+`(+"Hi", +"World")
  say(+"Good"); say(Str)
}
toAST.runCatching {
  `+`(+1, +"World")

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请写一个 type inference ，正确判别以下表达式

toAST.run {
  `+`(+1, +1)
  `+`(+"Hi", +"World")
  say(+"Good"); say(Str)
}
toAST.runCatching {
  `+`(+1, +"World")

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import jdk.jshell.JShell
import jdk.jshell.spi.*
import java.lang.reflect.*
import kotlin.reflect.KClass
import kotlin.reflect.full.memberProperties

//dumps(Pair::class) (Pair(0,0), mutableMapOf("first" to 3))

fun dumps(T:KClass<*>, ld:T=JS("(void)(${T} o, java.util.Map<String,Object> m){"+
  T.memberProperties.joinToString(""){"  m.put(\"${it.name}\",o.get${it.name.capitalize()}());"}+"}")!!

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# 用 pyQt 框选获取屏幕截图，PIL.ImageGrab.grab() 可以获取全屏图，继续，继续capture和鼠标
#xy可以换成两个QPoint

#请用PyGTK兼容 linux 上的 PIL grabclipboard()
import gi; gi.require_version("Gtk", "3.0")
from gi.repository import Gtk, Gdk
gi.overrides.GdkPixbuf.Pixbuf.toPIL=lambda g: PIL.Image.frombuffer("RGBA",(g.get_width(),g.get_height()),g.get_pixels() )

cc=Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)

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