FileTools[Text]

 read an integer from a file

Parameters

 file - file descriptor or filename

Description

 • The ReadInteger(file) command attempts to read an integer from file.   The ReadInteger command skips whitespace until an integer or non-whitespace character is found.  If there is a valid integer, it is read from file and returned.  If the characters do not form a integer, then NULL is returned.
 • If no integer is found, the file position is reset to its value before the call to ReadInteger was made.
 • To determine if the end of the file has been reached, use AtEndOfFile.
 • 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 does not exists.

Examples

 > $\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{WriteString}\right]\left("testfile","1 two 3"\right)$
 ${7}$ (1)
 > $\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{Close}\right]\left("testfile"\right):$
 > $\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{ReadInteger}\right]\left("testfile"\right)$
 ${1}$ (2)
 > $\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{ReadInteger}\right]\left("testfile"\right)$
 > $\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{ReadString}\right]\left("testfile"\right)$
 ${"two"}$ (3)
 > $\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{ReadInteger}\right]\left("testfile"\right)$
 ${3}$ (4)
 > $\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{ReadInteger}\right]\left("testfile"\right)$
{"extraction_info": {"found_math": true, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 11, "mathjax_tag": 0, "mathjax_inline_tex": 0, "mathjax_display_tex": 0, "mathjax_asciimath": 0, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0, "math_score": 0.5847118496894836, "perplexity": 1627.6504240555996}, "config": {"markdown_headings": true, "markdown_code": false, "boilerplate_config": {"ratio_threshold": 0.18, "absolute_threshold": 10, "end_threshold": 15, "enable": true}, "remove_buttons": true, "remove_image_figures": true, "remove_link_clusters": true, "table_config": {"min_rows": 2, "min_cols": 3, "format": "plain"}, "remove_chinese": true, "remove_edit_buttons": true, "extract_latex": true}, "warc_path": "s3://commoncrawl/crawl-data/CC-MAIN-2023-14/segments/1679296945289.9/warc/CC-MAIN-20230324211121-20230325001121-00659.warc.gz"}