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TCPClient TCP客户端扩展：连接TCP服务器进行文本消息通信 · App Inventor 2 中文网
...、ISO-8859-1、UTF-16BE、UTF-16LE、UTF-16。
字符集US-ASCII Charset_USASCII
US-ASCII 字符集常量。
字符集UTF-8 Charset_UTF8
UTF-8 字符集常量。
字符集ISO-Latin-1 Charset_ISO_Latin_1
ISO-8859-1 字符集常量。
字符集UTF-16BE Charset_UTF16BE
UTF-16BE 字符...
How can I validate a string to only allow alphanumeric characters in it?
...char.IsLetterOrDigit instead IsLetter+IsNumber
– nick_n_a
Oct 30 '18 at 8:27
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...
How do I know which version of Javascript I'm using?
...es my browser's JavaScript/JSscript engine conform to".
For IE :
alert(@_jscript_version); //IE
Refer Squeegy's answer for non-IE versions :)
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AngularJs ReferenceError: $http is not defined
... I wonder why Angular's own documentation (docs.angularjs.org/tutorial/step_05) has this error.
– Anurag
Oct 9 '13 at 11:49
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...
C read file line by line
...ppet involving the getline() function (see the manual page here):
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
FILE * fp;
char * line = NULL;
size_t len = 0;
ssize_t read;
fp = fopen("/etc/motd", "r");
if (fp == NULL)
exit...
Get JavaScript object from array of objects by value of property [duplicate]
...
Using underscore.js:
var foundObject = _.findWhere(jsObjects, {b: 6});
How to send email via Django?
... I'm not in the business of managing email servers.
In settings.py:
EMAIL_USE_TLS = True
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_PORT = 587
EMAIL_HOST_USER = 'me@gmail.com'
EMAIL_HOST_PASSWORD = 'password'
NOTE: In 2016 Gmail is not allowing this anymore by default. You can either use an external se...
How do I implement an Objective-C singleton that is compatible with ARC?
...redInstance
{
static MyClass *sharedInstance = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedInstance = [[MyClass alloc] init];
// Do any other initialisation stuff here
});
return sharedInstance;
}
...
Why should the copy constructor accept its parameter by reference in C++?
...dited Jun 21 '12 at 8:10
someone_ smiley
90411 gold badge2121 silver badges3838 bronze badges
answered Apr 21 '10 at 19:14
...
How do I split a multi-line string into multiple lines?
...df
2 sfasdf
asdfgadfg
1 asfasdf
sdfasdgf
"""
text = text.splitlines()
rows_to_print = {}
for line in range(len(text)):
if text[line][0] == '1':
rows_to_print = rows_to_print | {line, line + 1}
rows_to_print = sorted(list(rows_to_print))
for i in rows_to_print:
print(text[i])
...