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In the C standard library, the character-reading functions such as getchar return a value equal to the symbolic value (macro) EOF to indicate that an end-of-file condition has occurred. The actual value of EOF is implementation-dependent and must be negative (but is commonly −1, such as in glibc [ 2 ] ).
Only the contents prior to this line are executed, and the contents of the source file after this line are available as a file object: PACKAGE::DATA in Perl (e.g., main::DATA) and DATA in Ruby. As an inline file, these are semantically similar to here documents, though there can be only one per script.
>file.txt -bash: file.txt: cannot overwrite existing file $ echo "But we can use the >| operator to ignore the noclobber." > | file.txt $ cat file.txt # Successfully overwrote the contents of file.txt using the >| operator But we can use the >| operator to ignore the noclobber. $ set +o noclobber # Changes setting back
file.s is a command-line argument which tells the program rm to remove the file named file.s. Some programming languages, such as C , C++ and Java , allow a program to interpret the command-line arguments by handling them as string parameters in the main function .
The prototypical append-only data structure is the log file. Log-structured data structures found in Log-structured file systems and databases work in a similar way: every change (transaction) that happens to the data is logged by the program, and on retrieval the program must combine the pieces of data found in this log file. [ 9 ]
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In the Java virtual machine, internal type signatures are used to identify methods and classes at the level of the virtual machine code. Example: The method String String. substring (int, int) is represented in bytecode as Ljava / lang / String. substring (II) Ljava / lang / String;. The signature of the main method looks like this: [2]
From April 2009 to December 2012, if you bought shares in companies when John S. Watson joined the board, and sold them when he left, you would have a 58.3 percent return on your investment, compared to a 75.8 percent return from the S&P 500.