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How to replace all occurrences of a string?
I have this string:
70 Answers
70
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How do I make a textbox that only accepts numbers?
...to implement such thing recently and i ended up with try-parsing resulting string to number and allowing input only if parsing succeeded
– grzegorz_p
Jan 4 '12 at 15:03
1
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Convert pem key to ssh-rsa format
...PubKey = NULL;
RSA* pRsa = NULL;
BIO *bio, *b64;
ERR_load_crypto_strings();
OpenSSL_add_all_algorithms();
if (argc != 3)
{
printf("usage: %s public_key_file_name ssh_key_description\n", argv[0]);
iRet = 1;
goto error;
}
pFile = fopen(argv[1], "rt");
i...
Insert Update trigger how to determine if insert or update
...aTable] FOR INSERT, UPDATE, DELETE
AS
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with caller queries SELECT statements.
-- If an update/insert/delete occurs on the main table, the number of records affected
-- should only be based on that table and not what records th...
What is the difference between printf() and puts() in C?
...ically appends a newline. If that's not what you want, you can fputs your string to stdout or use printf.
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My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
...st one argument. One of built-in classes which takes two arguments is std::string
std::string hundred_dots(100, '.');
This is all well and fine (technically, it would have most vexing parse if it would be written as std::string wat(int(), char()), but let's be honest - who would write that? But l...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
...ll keyword
So we grep source in the Bash 4.19 source code for the output string:
git grep '"user\b'
which leads us to execute_cmd.c function time_command, which uses:
gettimeofday() and getrusage() if both are available
times() otherwise
all of which are Linux system calls and POSIX functio...
When should I use malloc in C and when don't I?
...
char *some_memory = "Hello World";
is creating a pointer to a string constant. That means the string "Hello World" will be somewhere in the read-only part of the memory and you just have a pointer to it. You can use the string as read-only. You cannot make changes to it. Example:
some_...
How do I execute a command and get the output of the command within C++ using POSIX?
...stream>
#include <memory>
#include <stdexcept>
#include <string>
#include <array>
std::string exec(const char* cmd) {
std::array<char, 128> buffer;
std::string result;
std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
...
How to write Unicode characters to the console?
...F8;
for (var i = 0; i <= 1000; i++) {
Console.Write(Strings.ChrW(i));
if (i % 50 == 0) { // break every 50 chars
Console.WriteLine();
}
}
Console.ReadKey();
}
}
VB.NET
imports Microsoft.VisualBasic
imports System
...