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Apply .gitignore on an existing repository already tracking large number of files

... This answer solved my problem: First of all, commit all pending changes. Then run this command: git rm -r --cached . This removes everything from the index, then just run: git add . Commit it: git commit -m ".gitignore is now working" ...
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RegEx for Javascript to allow only alphanumeric

I need to find a reg ex that only allows alphanumeric. So far, everyone I try only works if the string is alphanumeric, meaning contains both a letter and a number. I just want one what would allow either and not require both. ...
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querySelector search immediate children

...port): see full support list. function(elem) { return elem.querySelectorAll(':scope > someselector'); }; share | improve this answer | follow | ...
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What is the syntax for an inner join in LINQ to SQL?

...t which has as properties the DealerContact and Dealer records, along with all of their fields. We can then use fields from those records as we filter and select the results, as demonstrated by the remainder of the example, which uses dc_d as a name for the anonymous object we built which has bot...
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Split function equivalent in T-SQL?

...e the case in my instance. The DBA's have locked that feature and will not allow it. Thanks XOR! – dscarr Aug 22 '11 at 19:48 ...
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Get current directory name (without full path) in a Bash script

... No need for basename, and especially no need for a subshell running pwd (which adds an extra, and expensive, fork operation); the shell can do this internally using parameter expansion: result=${PWD##*/} # to assign to a variable printf '%s\n' "$...
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How do I check if an index exists on a table field in MySQL?

...name, this way you don't need to find out the index name if it is automatically added without name. – Programista Apr 9 '14 at 11:05 ...
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How do I get the value of text input field using JavaScript?

...earchTxt"]').value; selected by name Method 6: document.querySelectorAll('selector')[whole_number].value which also uses a CSS selector to select elements, but it returns all elements with that selector as a static Nodelist. For example, document.querySelectorAll('#searchTxt')[0].value; ...
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How do I list one filename per output line in Linux?

...s -1a First, though, make sure your ls supports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use man ls or ls --help or check the documentation. E.g.: $ man ls ... -1 list one file per line. Avoid '\n' with -q or -b ...
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How to select where ID in Array Rails ActiveRecord without exception

... If it is just avoiding the exception you are worried about, the "find_all_by.." family of functions works without throwing exceptions. Comment.find_all_by_id([2, 3, 5]) will work even if some of the ids don't exist. This works in the user.comments.find_all_by_id(potentially_nonexistent_id...