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Bytes of a string in Java
In Java, if I have a String x , how can I calculate the number of bytes in that string?
8 Answers
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Listing all permutations of a string/integer
...ming interviews (not from my experience of interviews though) is to take a string or an integer and list every possible permutation.
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Quick Way to Implement Dictionary in C
...ng it from scratch. I don't want it to be generic either -- something like string->int will do. But I do want it to be able to store an arbitrary number of items.
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Concept behind these four lines of tricky C code
... 'u' 0x53 'S' 0x2B '+' 0x2B '+' 0x43 'C'
This pattern corresponds to the string that you see printed, only backwards. At the same time, the second element of the array becomes zero, providing null terminator, making the string suitable for passing to printf().
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What are the security risks of setting Access-Control-Allow-Origin?
...s answer is not quite correct according to the current CORS standard: "The string '*' cannot be used for a resource that supports credentials." So you cannot force a request to use transient authentication in the form of cookies, cached HTTP authentication or client SSL certificates. However if the ...
How do function pointers in C work?
...nted programming in C.
For example, the following lines is written in C:
String s1 = newString();
s1->set(s1, "hello");
Yes, the -> and the lack of a new operator is a dead give away, but it sure seems to imply that we're setting the text of some String class to be "hello".
By using funct...
Keep-alive header clarification
...ween computer A and server F")?
A TCP connection is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this.
HTTP works with request-response: client connects to server, performs a requ...
How to do scanf for single char in C [duplicate]
...blem is to put a blank space before the conversion specifier in the format string:
scanf(" %c", &c);
The blank in the format string tells scanf to skip leading whitespace, and the first non-whitespace character will be read with the %c conversion specifier.
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How can I remove non-ASCII characters but leave periods and spaces using Python?
I'm working with a .txt file. I want a string of the text from the file with no non-ASCII characters. However, I want to leave spaces and periods. At present, I'm stripping those too. Here's the code:
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Cannot ping AWS EC2 instance
...ill help someone else...
1) First make sure the EC2 instance has a public IP. If has a Public DNS or Public IP address (circled below) then you should be good. This will be the address you ping.
2) Next make sure the Amazon network rules allow Echo Requests. Go to the Security Group for the EC2.
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