glab

some test code of golang

lab1: reflect

lab2: Recursive

go test -test.bench=".*"
N = 45
testing: warning: no tests to run
Benchmark_Recursive-4                  1        10018573100 ns/op
Benchmark_Loop-4                2000000000               0.00 ns/op
Benchmark_Stack-4               2000000000               0.00 ns/op
PASS
ok      github.com/vipally/glab/lab2    10.154s

结论：
本测试求Fibonacci(45) 递归算法已经无法忍受 当N再增加到50以上的时候 递归算法已经无法算出结果
而采用循环和stack的算法 N=10亿 仍然毫无压力

lab2: Golang deep

lab3: size test

lab4: string buffer test

lab5: functor test

lab6: float test

lab7: interface inherit test

lab8: interface nil test

含有匿名成员的结构体 可以由父对象默认实现某个接口 达到实现某接口默认行为
子对象可以实现该函数 覆盖父对象的默认行为

lab9: go parse

lab10: disaster of recursive

lab11: constant branch optimization 常量条件编译优化

lab12: confused interface

lab13: timer test during system time rechange

lab14: channel and mutex test on 1WnR case

lab15: random for test dice

lab16: GUID:array.slice error when take address of range value

BUG:对range变量x进行取地址将会是一场灾难 因为go是值拷贝 并且range变量会在遍历期间重用
如果对该变量取地址 那么存下来的东西就只剩集合里面最后一个元素了
这个问题可以跟Go提一个issue，禁止对range变量取地址

lab17: Go dll test

lab18: range slice & range map speed test

结论：对同样大小的slice和map执行range，对map的遍历慢10倍

lab19 goroutine test

lab20 string test

对string range，得到的是rune字符序列，index不一定连续 对string取下标 得到的是对应[]byte的字节

lab21 some test of std.flag

lab22 debug-lock with full lock-epoch log

lab23 v2 bug: default value changes with parsed values on slice flagsbug report

lab24 v2 bug: Flag default value is overwritten by environment in help output.bug report

lab25 v2 bug: Accept multi values on slice flagsbug report

lab26 v2 bug: slice flag value don't append to default values from ENV or filebug report

lab27 encoding/json: add FlexObject for encoding/decoding between JSON and flex Go types.

lab28 json/yaml marshal test. Interface test.