我有一个 C++ 示例，我试图使用 h5py 重现它，但它没有按预期工作。我用 h5py 得到了空填充字符串，我期望空终止字符串。
这是我的 C++ 驱动程序...
main.cpp
#include <hdf5.h>
int main(void) {
auto file = H5Fcreate("test-c.h5", H5F_ACC_TRUNC,
H5P_DEFAULT, H5P_DEFAULT);
char strings[5][64] = {
"please work 0",
"please work 1",
"please work 2",
"please work 3",
"please work 4"};
auto H5T_C_S1_64 = H5Tcopy (H5T_C_S1);
H5Tset_size(H5T_C_S1_64, 64);
hsize_t dims[1] = {5};
auto dataspace = H5Screate_simple(1, dims, NULL);
auto dataset = H5Dcreate(file, "test dataset", H5T_C_S1_64, dataspace,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
H5Dwrite (dataset, H5T_C_S1_64, H5S_ALL, H5S_ALL, H5P_DEFAULT, strings);
H5Dclose(dataset);
H5Sclose(dataspace);
H5Tclose(H5T_C_S1_64); …我正在玩c ++ 17和插件,我遇到了一个我无法解决的错误.在下面的MWE中,我可以调用一个带有a的本地函数,std::any当我尝试读取内容时,一切都按预期工作.当我通过插件(dlopen)加载这个完全相同的函数时,它正确地看到了any上的类型,但它不能std::any_cast是内容.
在弄清楚导致此错误的原因时,将非常感谢任何帮助.
这是我的环境,MWE和产生的错误.
>> g++ --version
g++ (GCC) 7.1.1 20170526 (Red Hat 7.1.1-2)
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>> scons --version
SCons by Steven Knight et al.:
script: v2.5.1.rel_2.5.1:3735:9dc6cee5c168[MODIFIED], 2016/11/03 14:02:02, by bdbaddog on mongodog
engine: v2.5.1.rel_2.5.1:3735:9dc6cee5c168[MODIFIED], 2016/11/03 14:02:02, by bdbaddog on mongodog
engine path: ['/usr/lib/scons/SCons']
Copyright (c) …