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Why can't a text column have a default value in MySQL?
...XT column actually takes less total memory than storing the same data in a CHAR or VARCHAR column.
– David Cary
Sep 28 '12 at 17:35
5
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Best way to test if a generic type is a string? (C#)
..., UInt16, Int32, UInt32, Int64, UInt64, Single, Double, Decimal, DateTime, Char, and String, so you can check for primitive types using this. More info on "Generic Type Checking".
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Is there a command to refresh environment variables from the command prompt in Windows?
... Path_HKCU >> "%TEMP%\_env.cmd"
:: Caution: do not insert space-chars before >> redirection sign
echo/set Path=%%Path_HKLM%%;%%Path_HKCU%% >> "%TEMP%\_env.cmd"
:: Cleanup
del /f /q "%TEMP%\_envset.tmp" 2>nul
del /f /q "%TEMP%\_envget.tmp" 2>nul
:: S...
A std::map that keep track of the order of insertion?
...<cstdlib>
#include "ordered_map.h"
int main() {
tsl::ordered_map<char, int> map = {{'d', 1}, {'a', 2}, {'g', 3}};
map.insert({'b', 4});
map['h'] = 5;
map['e'] = 6;
map.erase('a');
// {d, 1} {g, 3} {b, 4} {h, 5} {e, 6}
for(const auto& key_value : map) {
std::cout << "{" ...
Method to Add new or update existing item in Dictionary
...method AddOrUpdate()..
Let me show an example:
var str = "Hellooo!!!";
var characters = new ConcurrentDictionary<char, int>();
foreach (var ch in str)
characters.AddOrUpdate(ch, 1, (k, v) => v + 1);
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Getting output of system() calls in Ruby
...ble like so:
output = `ls`
p output
or
printf output # escapes newline chars
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Why was the switch statement designed to need a break?
...
To implement Duff's device, obviously:
dsend(to, from, count)
char *to, *from;
int count;
{
int n = (count + 7) / 8;
switch (count % 8) {
case 0: do { *to = *from++;
case 7: *to = *from++;
case 6: *to = *from++;
case 5: *to = *from++;
case 4: ...
Differences between fork and exec
..." functions to create the child process
execvp (argv[0], const_cast<char**>(argv));
} else { // This is the Parent Process
//Continue executing parent process
}
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Android – Listen For Incoming SMS Messages
... @RuchirBaronia Multipart messages. A single SMS message has a character limit (it varies depending on the character set you're using, but common limits are 70, 140, 160 characters). If a message exceeds that limit, it can be split into multiple messages, parts. That array is the array o...
How to get the number of Characters in a String?
How can I get the number of characters of a string in Go?
7 Answers
7
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