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Pointer expressions: *ptr++, *++ptr and ++*ptr
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The statement also initializes p to point to the first character in the string literal "Hello". For the sake of this exercise, it's important to understand p as pointing not to the entire string, but only to the first character, 'H'. After all, p is a pointer to one char, not to the entire string...
String's Maximum length in Java - calling length() method
In Java , what is the maximum size a String object may have, referring to the length() method call?
7 Answers
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Are “while(true)” loops so bad? [closed]
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BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String strLine;
while ((strLine = br.readLine()) != null) {
// do something with the line
}
And the usual C++ convention for reading input is:
#include <iostream>
#include <string>
std::string data;
while(st...
How do I add custom field to Python log format string?
My current format string is:
7 Answers
7
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Trim spaces from start and end of string
...am trying to find a way to trim spaces from the start and end of the title string. I was using this, but it doesn't seem to be working:
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Pretty-print C++ STL containers
... that match those criteria but aren't actually containers, like std::basic_string. Also like Marcelo's version, it uses templates that can be specialized to specify the delimiters to use.
The major difference is that I've built my version around a pretty_ostream_iterator, which works similar to the...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...eversed bits of v; first get LSB of v
int s = sizeof(v) * CHAR_BIT - 1; // extra shift needed at end
for (v >>= 1; v; v >>= 1)
{
r <<= 1;
r |= v & 1;
s--;
}
r <<= s; // shift when v's highest bits are zero
Faster (32-bit processor)
unsigned char b = x;
b = ((...
Using printf with a non-null terminated string
Suppose you have a string which is NOT null terminated and you know its exact size, so how can you print that string with printf in C? I recall such a method but I can not find out now...
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What column type/length should I use for storing a Bcrypt hashed password in a Database?
... Be aware - storing as binary(60) can cause unexpected behavior for string equality (among other things). In .NET this can be overcome by using String.Equals(fromDataBaseBinary60string, typicalishString, StringComparison.InvariantCulture)
– JHubbard80
Fe...
Replacing instances of a character in a string
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Strings in python are immutable, so you cannot treat them as a list and assign to indices.
Use .replace() instead:
line = line.replace(';', ':')
If you need to replace only certain semicolons, you'll need to be more speci...