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Convert nullable bool? to bool
...be false, you can do this:
bool newBool = x.HasValue ? x.Value : false;
Or:
bool newBool = x.HasValue && x.Value;
Or:
bool newBool = x ?? false;
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What are carriage return, linefeed, and form feed?
...out advancing downward. The name comes from a printer's carriage, as monitors were rare when the name was coined. This is commonly escaped as \r, abbreviated CR, and has ASCII value 13 or 0x0D.
Linefeed means to advance downward to the next line; however, it has been repurposed and renamed. Used...
In Bash, how to add “Are you sure [Y/n]” to any command or alias?
In this particular case, I'd like to add a confirm in Bash for
17 Answers
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How to install a gem or update RubyGems if it fails with a permissions error
I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system , and it fails with this error:
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What is the exact problem with multiple inheritance?
...hether multiple inheritance should be included into the next version of C# or Java. C++ folks, who are fortunate enough to have this ability, say that this is like giving someone a rope to eventually hang themselves.
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Regex lookahead, lookbehind and atomic groups
...hese things in my regex body but I haven't got a clue what I can use them for.
Does somebody have examples so I can try to understand how they work?
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Java Security: Illegal key size or default parameters?
...E) Unlimited Strength Jurisdiction Policy Files 8 Download (only required for versions before Java 8 u162)
Extract the jar files from the zip and save them in ${java.home}/jre/lib/security/.
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Where is my .vimrc file?
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@Nateshbhat: should I keep using /etc/vim/vimrc or copy that to ~/.vimrc? Or can I have both?
– Mohammad Faisal
Jul 23 '19 at 17:26
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Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign
I make an outer join and executed successfully in the informix database but I get the following exception in my code:
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Delete specific line number(s) from a text file using sed?
I want to delete one or more specific line numbers from a file. How would I do this using sed?
6 Answers
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