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Bookmark or Share- regex - What regular expression will match valid international phone ...Thanks to the international phone numbering plan (ITU-T E. 164), phone numbers cannot contain more than 15 digits. The shortest international phone numbers in use contain seven digits. This would be perfect, for example, if you only needed to capture mobile numbers to send an OPT code or SMS.
- Which free version of Java can I use for production environments and or ...For Java 17, the Oracle JDK product is available under a new No-Fee Terms and Conditions license, discussed on the Oracle company blog. On my first reading, it appears this new license makes production use free-of-cost (along with dev, test, and training usages), except for products sold for a fee while bundling the Oracle JDK product. But I am ...
- Create new column with dplyr mutate and substring of existing columnI have a dataframe with a column of strings and want to extract substrings of those into a new column. Here is some sample code and data showing I want to take the string after the final underscore character in the id column in order to create a new_id column.
- What is the naming convention in Python for variables and functions ...Coming from a C# background the naming convention for variables and methods are usually either camelCase or PascalCase: // C# example. string thisIsMyVariable = "a". public void ThisIsMyMethod() In Python, I have seen the above but I have also seen snake_case being used: # python example. this_is_my_variable = 'a'.
- What are carriage return, linefeed, and form feed?1, Carriage return: It's a printer terminology meaning changing the print location to the beginning of current line. In computer world, it means return to the beginning of current line in most cases but stands for new line rarely. 2, Line feed: It's a printer terminology meaning advancing the paper one line. So Carriage return and Line feed are ...
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