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What exactly is nullptr?
...a null pointer constant, and that an integral null pointer constant can be converted to std::nullptr_t. The opposite direction is not allowed. This allows overloading a function for both pointers and integers, and passing nullptr to select the pointer version. Passing NULL or 0 would confusingly sel...
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
StringTokenizer ? Convert the String to a char[] and iterate over that? Something else?
15 Answers
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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
How do I implement the following (Python pseudocode) in C++?
21 Answers
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UnicodeDecodeError: 'utf8' codec can't decode byte 0xa5 in position 0: invalid start byte
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Set default encoder at the top of your code
import sys
reload(sys)
sys.setdefaultencoding("ISO-8859-1")
Java ByteBuffer to String
Is this a correct approach to convert ByteBuffer to String in this way,
10 Answers
10
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Pass an array of integers to ASP.NET Web API?
...s TimeSpan, DateTime, Guid, decimal, and string, plus any type with a type converter that can convert from a string." an int[] is not a simple type.
– Tr1stan
Aug 6 '15 at 13:03
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How to convert an Stream into a byte[] in C#? [duplicate]
Is there a simple way or method to convert an Stream into a byte[] in C#?
12 Answers
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Creating Unicode character from its number
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Just cast your int to a char. You can convert that to a String using Character.toString():
String s = Character.toString((char)c);
EDIT:
Just remember that the escape sequences in Java source code (the \u bits) are in HEX, so if you're trying to reproduce an ...
How can I convert JSON to a HashMap using Gson?
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what if I need to convert string which is actually a array
– Ravi Yadav
Nov 15 '19 at 13:50
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Is 'float a = 3.0;' a correct statement?
...It is not an error to declare float a = 3.0 : if you do, the compiler will convert the double literal 3.0 to a float for you.
However, you should use the float literals notation in specific scenarios.
For performance reasons:
Specifically, consider:
float foo(float x) { return x * 0.42; }
H...