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Getting image dimensions without reading the entire file
Is there a cheap way to get the dimensions of an image (jpg, png, ...)? Preferably, I would like to achieve this using only the standard class library (because of hosting restrictions). I know that it should be relatively easy to read the image header and parse it myself, but it seems that something...
How to sum up elements of a C++ vector?
What are the good ways of finding the sum of all the elements in a std::vector ?
11 Answers
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Tomcat: How to find out running tomcat version
I'm trying to get Appfuse + tomcat + jRebel working.
27 Answers
27
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Is there a library function for Root mean square error (RMSE) in python?
I know I could implement a root mean squared error function like this:
12 Answers
12
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Capture characters from standard input without waiting for enter to be pressed
I can never remember how I do this because it comes up so infrequently for me. But in C or C++, what is the best way to read a character from standard input without waiting for a newline (press enter).
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How to list files in a directory in a C program?
I'm trying to write an ftp server on Linux. In this matter how can I list files in the directory on terminal by a C program? Maybe I can use exec function to run find command but I want file name as a string to send client program. How can I do this?
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What's the meaning of * (asterisk) in XAML ColumnDefinition?
What is the meaning of * (asterisk) in the XAML below?
4 Answers
4
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Regular expression to limit number of characters to 10
I am trying to write a regular expression that will only allow lowercase letters and up to 10 characters. What I have so far looks like this:
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Force page scroll position to top at page refresh in HTML
I am building a website which I am publishing with div s. When I refresh the page after it was scrolled to position X, then the page is loaded with the scroll position as X.
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