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What is the email subject length limit?
How many characters are allowed to be in the subject line of Internet email?
I had a scan of The RFC for email but could not see specifically how long it was allowed to be.
I have a colleague that wants to programmatically validate for it.
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Does pandas iterrows have performance issues?
...y slow to update a row at a time. Much better to create new structures and concat.
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What does the 'L' in front a string mean in C++?
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It's a wchar_t literal, for extended character set. Wikipedia has a little discussion on this topic, and c++ examples.
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impr...
Realistic usage of the C99 'restrict' keyword?
...ons could be saved, as mentioned by supercat.
Consider for example:
void f(char *restrict p1, char *restrict p2) {
for (int i = 0; i < 50; i++) {
p1[i] = 4;
p2[i] = 9;
}
}
Because of restrict, a smart compiler (or human), could optimize that to:
memset(p1, 4, 50);
memset(...
Simple example of threading in C++
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// do stuff
}
void task2() {
// do stuff
}
int main (int argc, char ** argv) {
using namespace boost;
thread thread_1 = thread(task1);
thread thread_2 = thread(task2);
// do other stuff
thread_2.join();
thread_1.join();
return 0;
}
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Oracle Differences between NVL and Coalesce
...bc',10) from dual; will fail with Error - inconsistent datatypes: expected CHAR got NUMBER
Example for UNION use-case
SELECT COALESCE(a, sysdate)
from (select null as a from dual
union
select null as a from dual
);
fails with ORA-00932: inconsistent datatypes: expected CHAR ...
How to make MySQL handle UTF-8 properly
... yesterday suggested that I should make sure my database can handle UTF-8 characters correctly. How I can do this with MySQL?
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How to TryParse for Enum value?
... = Enum.ToObject(type, ul);
return true;
}
private static char[] _enumSeperators = new char[] { ',', ';', '+', '|', ' ' };
private static object EnumToObject(Type underlyingType, string input)
{
if (underlyingType == typeof(int))
{
int s;
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Import CSV file to strongly typed data structure in .Net [closed]
...= new StringBuilder();
while (stringReader.Peek() != -1)
{
char readChar = (char)stringReader.Read();
if (readChar == '\n' || (readChar == '\r' && stringReader.Peek() == '\n'))
{
// If it's a \r\n combo consume the \n part and throw it away.
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Can I embed a custom font in an iPhone application?
....ttf fonts in the application's main bundle:
BOOL GSFontAddFromFile(const char * path);
NSUInteger loadFonts()
{
NSUInteger newFontCount = 0;
for (NSString *fontFile in [[NSBundle mainBundle] pathsForResourcesOfType:@"ttf" inDirectory:nil])
newFontCount += GSFontAddFromFile([fontFil...