leading and trailing

leading和trailing的意思是前导和尾随。在设计和排版中，leading通常指的是行间距，即行与行之间的距离；而trailing则指的是文本末尾与边缘之间的距离。在编程中，leading和trailing也可以指定某些操作的开始和结束。

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翻译一下function format = stlGetFormat(fileName) %STLGETFORMAT identifies the format of the STL file and returns 'binary' or %'ascii' fid = fopen(fileName); % Check the file size first, since binary files MUST have a size of 84+(50*n) fseek(fid,0,1); % Go to the end of the file fidSIZE = ftell(fid); % Check the size of the file if rem(fidSIZE-84,50) > 0 format = 'ascii'; else % Files with a size of 84+(50*n), might be either ascii or binary... % Read first 80 characters of the file. % For an ASCII file, the data should begin immediately (give or take a few % blank lines or spaces) and the first word must be 'solid'. % For a binary file, the first 80 characters contains the header. % It is bad practice to begin the header of a binary file with the word % 'solid', so it can be used to identify whether the file is ASCII or % binary. fseek(fid,0,-1); % go to the beginning of the file header = strtrim(char(fread(fid,80,'uchar')')); % trim leading and trailing spaces isSolid = strcmp(header(1:min(5,length(header))),'solid'); % take first 5 char fseek(fid,-80,1); % go to the end of the file minus 80 characters tail = char(fread(fid,80,'uchar')'); isEndSolid = findstr(tail,'endsolid'); % Double check by reading the last 80 characters of the file. % For an ASCII file, the data should end (give or take a few % blank lines or spaces) with 'endsolid <object_name>'. % If the last 80 characters contains the word 'endsolid' then this % confirms that the file is indeed ASCII. if isSolid & isEndSolid format = 'ascii'; else format = 'binary'; end end fclose(fid);

这段代码的作用是识别STL文件的格式并返回'binary'或'ascii'。首先打开文件并检查文件大小，如果文件大小为84+(50*n)，则该文件可能是ASCII或二进制格式。接着读取文件的前80个字符，并检查第一个单词是否为'solid'。如果是，则该文件为ASCII格式；否则，该文件为二进制格式。最后关闭文件并返回格式。

If you are experiencing difficulties logging in to GitLab with the provided token, there are a few potential reasons for this issue: Incorrect token: Double-check that you have entered the correct token. Ensure there are no leading or trailing spaces or any other typos in the token. Expired token: Tokens in GitLab can have an expiration date. If your token has expired, you will need to generate a new one. Go to your GitLab account settings, find the "Access Tokens" section, and generate a new token. Insufficient permissions: Make sure that the token you are using has the necessary permissions to log in to GitLab. Check the permissions associated with the token and ensure that it has the required access levels. Network or connectivity issues: It is possible that there may be network or connectivity issues preventing you from accessing the GitLab server. Verify that you have a stable internet connection and try again. GitLab server issues: Occasionally, the GitLab server may experience temporary issues or downtime. Check the GitLab status page or contact GitLab support to see if there are any known issues. If none of these solutions resolve the problem, it may be helpful to provide more specific details about your setup, any error messages received, or any recent changes made that could have affected your ability to log in.中文

如果您在使用提供的令牌登录GitLab时遇到困难，可能有几个潜在原因导致此问题：

1. 令牌错误：请仔细检查您输入的令牌是否正确。确保令牌中没有前导或尾随空格，也没有其他拼写错误。

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