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What method in the String class returns only the first N characters?
...input string to is longer than the provided length N , only the first N characters are to be displayed.
12 Answers
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JPG vs. JPEG image formats
...ut it is inaccurate. • The JPEG group were mostly Unix shops, thus the 4-char .jpeg extension, not because of Mac. • It was the DOS 8.3 limit that caused the shortening to .jpg — windows was just a shell on top of DOS. • The commonly accepted .jpg form is because of programs that had to cope...
How to remove line breaks from a file in Java?
...eplace actually does is to create and return a new String object with the characters changed as required. But your code then throws away that String ...
Here are some possible solutions. Which one is most correct depends on what exactly you are trying to do.
// #1
text = text.replace("\n", ""...
how to get the last character of a string?
How to get the last character of the string:
12 Answers
12
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How do you clear a stringstream variable?
...t, because you avoid invoking the std::string constructor that takes const char*. But any compiler these days should be able to generate the same code in both cases - so I would just go with whatever is more readable.
share
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Position of least significant bit that is set
...x077CB531U)) >> 27];
}
}
return total;
}
unsigned char lowestBitTable[256];
int get_lowest_set_bit(unsigned num) {
unsigned mask = 1;
for (int cnt = 1; cnt <= 32; cnt++, mask <<= 1) {
if (num & mask) {
return cnt;
}
}
...
How and why does 'a'['toUpperCase']() in JavaScript work?
... same as anyObject.anyPropertyName when anyPropertyName hasn't problematic characters.
See Working with Objects, from the MDN.
The toUpperCase method is attached to the type String. When you call a function on a primitive value, here 'a', it is automatically promoted to an object, here a String :
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What is meant by immutable?
...omething like this:
// Assume string is stored like this:
struct String { char* characters; unsigned int length; };
// Passing pointers because Java is pass-by-reference
struct String* substring(struct String* in, unsigned int begin, unsigned int end)
{
struct String* out = malloc(sizeof(struc...
PHP best way to MD5 multi-dimensional array?
...) function.
Test results for multi-dimensional array with md5-hashes (32 char) in keys and values:
Test name Repeats Result Performance
serialize 10000 0.761195 sec +0.00%
print_r 10000 1.669689 sec -119.35%
json_encode 10000...
Add leading zeroes to number in Java? [duplicate]
... See begray's answer which uses the correct flags to zero pad a 3 character wide output.
– Robert
Sep 5 '12 at 19:47
3
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