有没有办法在函数定义之间自动插入空格.例如我的初始资料来源是:
void
func1()
{
// func1 body.
}
void
func2()
{
// func2 body.
}
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我希望将其重新格式化为:
void
func1()
{
// func1 body.
}
void
func2()
{
// func2 body.
}
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如果有更多换行符,则应保留固定数量的换行符.
我有一个包含libevent库的c ++项目.项目结构:
.
|_ CMakeLists.txt
|_ Makefile
|_ src
| |_ my_lib.cpp
|_ test
| |_ my_lib_test.cpp
|_ lib
|_ libevent
|_ CMakeLists.txt
|_ ...
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当我构建并运行我的测试时,也会执行libevent测试.如何排除它们并仅运行我自己的测试?
这些陈述是否符合标准?
std::string str{"123"};
auto it = str.begin();
--it;
++it; // Does *it point to character '1' now?
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我在g ++ 4.7.2和clang ++ 3.5上尝试了这个 - *it返回'1'.这是c ++ 11中的标准行为吗?
我有一个load_config加载并返回 python 模块的函数:
import imp
def load_config(path: str):
return imp.load_source('config', path)
print(type(load_config('config.py')))
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此代码段打印<class 'module'>.
如何load_config使用 Mypy注释返回值?
我有一个测试脚本,它启动多个线程,连接它们并检查进程使用的驻留内存:
from threading import Thread
import resource
def resident_memory() -> int:
return resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
def work():
a = 'Hello world'
a += '!!!'
def run_threads(count: int) -> None:
for _ in range(count):
t = Thread(target=work)
t.start()
t.join()
def run_workers(count: int) -> None:
for _ in range(count):
work()
while True:
print('Mem usage:', resident_memory())
run_threads(10000)
#run_workers(10000)
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即使我加入了线程,看起来驻留内存也在不断增长.如果我work()在主线程中运行该函数,则不会检测到内存泄漏.我正在使用python 3.5进行测试.这是一个已知的问题吗?
根据文档 CFDictionaryCreate用于实例化CFDictionary swift.
func CFDictionaryCreate(_ allocator: CFAllocator!,
_ keys: UnsafeMutablePointer<UnsafePointer<Void>>,
_ values: UnsafeMutablePointer<UnsafePointer<Void>>,
_ numValues: CFIndex,
_ keyCallBacks: UnsafePointer<CFDictionaryKeyCallBacks>,
_ valueCallBacks: UnsafePointer<CFDictionaryValueCallBacks>) -> CFDictionary!
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我怎样才能创建keys和values参数?到目前为止,我已尝试使用swift的String类型,希望它会自动转换为适当的类型:
import Foundation
var keys : [String] = ["key1", "key2"]
var values : [String] = ["value1", "value2"]
var keyCallbacks = kCFTypeDictionaryKeyCallBacks
var valueCallbacks = kCFTypeDictionaryValueCallBacks
var dict : CFDictionary = CFDictionaryCreate(kCFAllocatorDefault,
&keys, &values, 2, &keyCallbacks, &valueCallbacks)
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不幸的是我收到一个错误,说String不是keys和values数组元素的正确类型:
main.swift:41:2: error: 'String' is …Run Code Online (Sandbox Code Playgroud) python ×2
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