Golam Kawsar questions

• In-place editing of multiple files in a directory using Perl's diamond and in-place edit operator
• Overlapping text substitution with Perl regular expression
• How to store tree data in a Lucene/Solr/Elasticsearch index or a NoSQL db?
• GDB conditional breakpoint on arbitrary types such as C++ std::string equality
• Finding meaningful sub-sentences from a sentence

Golam Kawsar answers