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What's the difference between %s and %d in Python string formatting?
...eger
%s is for generic string or object and in case of object, it will be converted to string
Consider the following code
name ='giacomo'
number = 4.3
print('%s %s %d %f %g' % (name, number, number, number, number))
the out put will be
giacomo 4.3 4 4.300000 4.3
as you can see %d will tru...
Calculating the difference between two Java date instances
...ong diffInMillies = date2.getTime() - date1.getTime();
return timeUnit.convert(diffInMillies,TimeUnit.MILLISECONDS);
}
And then can you call:
getDateDiff(date1,date2,TimeUnit.MINUTES);
to get the diff of the 2 dates in minutes unit.
TimeUnit is java.util.concurrent.TimeUnit, a standard Jav...
Java 8 stream's .min() and .max(): why does this compile?
...his decorator is the magic that allows Integer::max and Integer::min to be converted into a Comparator.
– Chris Kerekes
Oct 21 '16 at 20:58
2
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How to concatenate a std::string and an int?
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If you have Boost, you can convert the integer to a string using boost::lexical_cast<std::string>(age).
Another way is to use stringstreams:
std::stringstream ss;
ss << age;
std::cout << name << ss.str() << std::endl;
...
Access lapply index names inside FUN
...s? Yes! here are the benchmarks:
> x <- as.list(seq_len(1e6))
> system.time( y <- lapply(x, function(x){parent.frame()$i[]}) )
user system elapsed
2.38 0.00 2.37
> system.time( y <- lapply(x, function(x){parent.frame()$i[]}) )
user system elapsed
2.45 0.00 2.45
> system.time( ...
uint8_t can't be printed with cout
...es, most of them below value 32, which is the blank actually.
You have to convert aa to unsigned int to output the numeric value, since ostream& operator<<(ostream&, unsigned char) tries to output the visible character value.
uint8_t aa=5;
cout << "value is " << unsigned...
How to convert 1 to true or 0 to false upon model fetch
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All you need is convert string to int with + and convert the result to boolean with !!:
var response = {"isChecked":"1"};
response.isChecked = !!+response.isChecked
You can do this manipulation in the parse method:
parse: function (respo...
The tilde operator in C
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@MarcusJ Yes, one's complement works for converting signed to unsigned (signed->unsigned). (Note though it's easier to just assign the value to a variable declared differently and lett the compiler worry about it.) But it does not work the other way around (unsig...
Remove element of a regular array
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@MartinBrown Actually, converting a list to\from and array is much slower than an array copy (which is able to copy the data at the max speed allowed by the CPU with just a few ASM instructions). Also, shifting a list is very fast because it is ju...
Python 2.7: Print to File
Why does trying to print directly to a file instead of sys.stdout produce the following syntax error:
6 Answers
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