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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...integral types):
There are five standard signed integer types : signed char, short int, int, long int, and long long int. In this list, each type provides at least as much storage as those preceding it in the list.
There's also a table 9 in 7.1.6.2 Simple type specifiers, which shows the "mapp...
Image inside div has extra space below the image
...>
Explanation: why is there a gap under the image?
The gap or extra space under the image isn't a bug or issue, it is the default behaviour. The root cause is that images are replaced elements (see MDN replaced elements). This allows them to "act like image" and have their own intrinsic...
Glorified classes in the Java language
...ance). I would also add its generic typing without creating new instances.
String - with it's overloaded +-operator and the support of literals
Enum - the only class that can be used in a switch statement (soon a privilege to be given to String as well). It does other things as well (automatic stati...
Read Excel File in Python
....
You mentioned in the question that you also want the values output to a string. I dynamically build a format string for the output from the FORMAT column list. Rows are appended to the values string separated by a new line char.
The output column order is determined by the order of the column na...
Regex Email validation
... address is valid, pass the email address to the
MailAddress.MailAddress(String) class constructor.
public bool IsValid(string emailaddress)
{
try
{
MailAddress m = new MailAddress(emailaddress);
return true;
}
catch (FormatException)
{
return false;
...
What are the rules for the “…” token in the context of variadic templates?
...ttern = z<T>(args)
}
Now if I call this function passing T as {int, char, short}, then each of the function call is expanded as:
g( arg0, arg1, arg2 );
h( x(arg0), x(arg1), x(arg2) );
m( y(arg0, arg1, arg2) );
n( z<int>(arg0), z<char>(arg1), z<short>(arg2) );
In ...
In PHP what does it mean by a function being binary-safe?
... function will work correctly when you pass it arbitrary binary data (i.e. strings containing non-ASCII bytes and/or null bytes).
For example, a non-binary-safe function might be based on a C function which expects null-terminated strings, so if the string contains a null character, the function wo...
Allowed characters in Linux environment variable names
...
From The Open Group:
These strings have the form
name=value; names shall not contain
the character '='. For values to be
portable across systems conforming to
IEEE Std 1003.1-2001, the value shall
be composed of characters from the
portable...
How to get current time and date in C++?
...is question gives you exactly this. If you are in doubt about how to get a string from stream, or how to properly format a time_point<>, go ahead and ask another question or google after it.
– Tarc
Jul 7 '17 at 17:02
...
Is there a date format to display the day of the week in java?
...rmatter f = DateTimeFormatter.ofPattern( “uuuu-MM-EEE” , Locale.US ) ;
String output = ld.format( f ) ;
ISO 8601
By the way, you may be interested in the standard ISO 8601 week numbering scheme: yyyy-Www-d.
2018-W01-2
Week # 1 has the first Thursday of the calendar-year. Week starts on...