犰狳如何摆脱错误信息 [英] armadillo how to get rid of error message

问题描述

运行以下代码仍会产生一条错误消息，尽管已成功捕获到异常，但该消息会转到stdout(不是stderr):

Running the following code still produces an error message that goes to stdout (not stderr) although the exception was successfully caught:

Mat<double> matrix_quantiles(const vector<double> & quantiles,
                         const Mat<double> & m) {
  Mat<double> sorted_matrix;
  try {
    sorted_matrix = arma::sort(arma::cor(m));
  } catch(std::logic_error & e) {
  /*
   Sometimes a col is constant, causing the correlation to be
   infinite. If that happens, add normal random jitter to the
   values and retry.
  */
  const Mat<double> jitter = Mat<double>(
    m.n_rows, m.n_cols, arma::fill::randn);
  return matrix_quantiles(quantiles, 1.e-3 * jitter + m);
} 
etc.

错误消息是:

error: sort(): given object has non-finite elements

代码运行良好，抖动策略足以胜任我的工作，但是如果我将输出写入stdout，则必须过滤掉错误消息.

The code runs fine, and the jittering strategy is good enough for what I do, but I have to filter out the error message if I write the output to stdout.

谢谢.

推荐答案

要禁用打印错误消息，请在包含Armadillo标头之前定义一个名为 ARMA_DONT_PRINT_ERRORS 的宏.例如:

To disable printing of error messagaes, define a macro named ARMA_DONT_PRINT_ERRORS before including the Armadillo header. For example:

#define ARMA_DONT_PRINT_ERRORS
#include <armadillo>

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