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cout保留两位小数输出 - C/C++ - 清泛网 - 专注C/C++及内核技术
...precision函数需要引入该头文件
int main() {
double dval = 123.456789;
// C风格
printf("in C: %.2f\n", dval);
// cout固定输出几位（整数+小数一起）
std::cout << std::setprecision(5) << dval << std::endl;
// cout固定输出2位小数，整数...
C++ protobuf使用入门实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ze------
google::protobuf::TestValue msg_val;
msg_val.set_number_value(123.f);
std::string str = msg_val.SerializeAsString();
std::cout << "--------- len:" << str.length() << ":" << str << std::endl;
google::protobuf::Test message;
message.mutable_fields()->operator []("test") = msg_va...
App Inventor 2 Clipboard 拓展：实现剪贴板的复制粘贴功能 · App Inventor 2 中文网
...基于 TaifunClipboard 拓展 开发。
.aix 拓展下载：
cn.fun123.Clipboard.aix
demo程序下载：
Clipboard.aia
使用方法
属性及方法很简单，默认操作成功后显示提示信息，SuppressToast设置为 假 后，则不显示提示信息。
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How to [recursively] Zip a directory in PHP?
...
USAGE: thisfile.php?dir=./path/to/folder (After zipping, it starts download too:)
<?php
$exclude_some_files=
array(
'mainfolder/folder1/filename.php',
'mainfolder/folder5/otherfile.php'
);
//***************built from htt...
Retrieving parameters from a URL
...
import urlparse
url = 'http://example.com/?q=abc&p=123'
par = urlparse.parse_qs(urlparse.urlparse(url).query)
print par['q'][0], par['p'][0]
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Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php
...the answer:
Just add this line before the line where you get error in your php file
ini_set('memory_limit', '-1');
It will take unlimited memory usage of server, it's working fine.
Consider '44M' instead of '-1' for safe memory usage.
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What is an abstract class in PHP?
What is an abstract class in PHP?
7 Answers
7
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Matching a space in regex
I need to match a space character in a PHP regular expression. Anyone got any ideas?
9 Answers
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How do I recursively delete a directory and its entire contents (files + sub dirs) in PHP?
...I delete a directory and its entire contents (files and subdirectories) in PHP?
21 Answers
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Difference between WebStorm and PHPStorm
...lopment and I would like to know what the differences between WebStorm and PHPStorm are.
6 Answers
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