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How to convert an IPv4 address into a integer in C#?
...pping:
using System;
using System.Net;
class App
{
static long ToInt(string addr)
{
// careful of sign extension: convert to uint first;
// unsigned NetworkToHostOrder ought to be provided.
return (long) (uint) IPAddress.NetworkToHostOrder(
(int) IPAddr...
What is the printf format specifier for bool?
...
I would +1 this if you get rid of the non-single-string-literal expression as the format string. This kind of usage easily turns into unsafe usage. printf("%s", x ? "true" : "false"); would fix the issue.
– R.. GitHub STOP HELPING ICE
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Is it possible to have SSL certificate for IP address, not domain name?
...e extension contains an iPAddress, the address MUST be stored in the octet string in "network byte order", as specified in [RFC791]. ... For IP version 4..., the octet string MUST contain exactly four octets." In short, you can't use a subnet in the subjectAltName field
– reg...
#define macro for debug printing in C?
...0
#endif
And then use DEBUG_TEST where I used DEBUG.
If you insist on a string literal for the format string (probably a good idea anyway), you can also introduce things like __FILE__, __LINE__ and __func__ into the output, which can improve the diagnostics:
#define debug_print(fmt, ...) \
...
std::string截取字符串，截取ip:port - c++1y / stl - 清泛IT社区，为创新赋能！
std::string ip("127.0.0.1:8888");
int index = ip.find_last_of(':');
// 获取ip
ip.substr(0, index).c_str();
// 获取port
ip.substr(index + 1).c_str();
Hidden Features of MySQL
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Binary Protocol:
MySQL 4.1 introduced a binary protocol that allows non-string data values to be sent
and returned in native format without conversion to and from string format. (Very usefull)
Aside, mysql_real_query() is faster than mysql_query() because it does not call strlen()
to opera...
Remove not alphanumeric characters from string
I want to convert the following string to the provided output.
7 Answers
7
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Add custom messages in assert?
...==b is false, the and-expression should also be false, and, therefore, the string should not be evaluated.
– ragnarius
Nov 7 '14 at 17:31
1
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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
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Note that Matt's code will result in an extra comma at the end of the string; using COALESCE (or ISNULL for that matter) as shown in the link in Lance's post uses a similar method but doesn't leave you with an extra comma to remove. For the sake of completeness, here's the relevant code from L...
Connection to SQL Server Works Sometimes
...onnection attempt succeeds or fails. The connection is using a connection string in the form:
22 Answers
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