大约有 40,000 项符合查询结果（耗时：0.0575秒） [XML]
When would anyone use a union? Is it a remnant from the C-only days?
...For example, let's say you want to create your own Variant type:
struct my_variant_t {
int type;
union {
char char_value;
short short_value;
int int_value;
long long_value;
float float_value;
double double_value;
void* ptr_value;
}...
VIM Replace word with contents of paste buffer?
...th the change command to go anywhere, you can use the black hole register "_: "_cw. Then once in insert mode, you can hit ctrl-R followed by the register you want (probably ") to put in the contents of that register.
"* - selection register (middle-button paste)
"+ - clipboard register (probably a...
Removing colors from output
...all conceivable ANSI escape sequences:
./somescript | sed 's/\x1B[@A-Z\\\]^_]\|\x1B\[[0-9:;<=>?]*[-!"#$%&'"'"'()*+,.\/]*[][\\@A-Z^_`a-z{|}~]//g'
(and if you have @edi9999's SI problem, add | sed "s/\x0f//g" to the end; this works for any control char by replacing 0f with the hex of the u...
Uploading images using Node.js, Express, and Mongoose
...b.
// Expose modules in ./support for demo purposes
require.paths.unshift(__dirname + '/../../support');
/**
* Module dependencies.
*/
var express = require('../../lib/express')
, form = require('connect-form');
var app = express.createServer(
// connect-form (http://github.com/visionmedia...
How to debug a Flask app
...e browser when there is an error. To run in development mode, set the FLASK_ENV=development environment variable then use the flask run command (remember to point FLASK_APP to your app as well).
For Linux, Mac, Linux Subsystem for Windows, Git Bash on Windows, etc.:
export FLASK_APP=myapp
export F...
How can I check if an ip is in a network in Python?
...otted quad string to long integer"
return struct.unpack('L',socket.inet_aton(ip))[0]
def networkMask(ip,bits):
"Convert a network address to a long integer"
return dottedQuadToNum(ip) & makeMask(bits)
def addressInNetwork(ip,net):
"Is an address in a network"
return ip &...
Can someone explain Microsoft Unity?
...object gets created.
Without IoC:
public class MyClass
{
IMyService _myService;
public MyClass()
{
_myService = new SomeConcreteService();
}
}
With IoC container:
public class MyClass
{
IMyService _myService;
public MyClass(IMyService myService)
{
_myS...
How to change a django QueryDict to Python Dict?
...
In django 1.6: dict(data._iteritems())
– Bas Koopmans
Nov 20 '13 at 15:20
5
...
Wrapping a C library in Python: C, Cython or ctypes?
...gist of it):
from ctypes import *
d2xx = WinDLL('ftd2xx')
OK = 0
INVALID_HANDLE = 1
DEVICE_NOT_FOUND = 2
DEVICE_NOT_OPENED = 3
...
def openEx(serial):
serial = create_string_buffer(serial)
handle = c_int()
if d2xx.FT_OpenEx(serial, OPEN_BY_SERIAL_NUMBER, byref(handle)) == OK:
...
hidden symbol ... is referenced by DSO 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...因是符号(函数)未导出导致的，添加导出申明即可解决：__attribute__ ((visibility("default")) DSO 是动态共享对象，Linux报“hidden symbol ... is referenced by DSO”错误的原因是符号(函数)未导出导致的，添加导出申明即可解决：
__attribute__ (...