read the next integer from a file
file descriptor or filename
The ReadNextInteger(file) command attempts to read an integer from file. The ReadNextInteger function skips non-numeric characters until a valid integer is found. The integer is read from file and returned. If no characters form a valid integer, then NULL is returned. In this case, the file is read to the end of the file.
If file is the name of a file that has not been opened, Maple attempts to open the file before attempting to read the integer.
An error is raised if file is not a valid descriptor or if it is the name of a file that cannot be opened.
FileToolsTextWriteString⁡testfile,1 two 3 four
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