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When to use valueChangeListener or f:ajax listener?

...e is already set. } Also, if you would need to update another property based on the submitted value, then it would fail when you're using valueChangeListener as the updated property can be overridden by the submitted value during the subsequent UPDATE_MODEL_VALUES phase. That's exactly why you s...
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What does the @ symbol represent in objective-c?

... Sort of arbitrary; it needed to be in the base ASCII set and not already used by C when the first Objective-C preprocessor was being written. That’s why it’s @. – Chris Hanson Apr 9 '19 at 5:33 ...
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Why does Java's Arrays.sort method use two different sorting algorithms for different types?

... arrays so Java's Array.sort() tries to choose the best algorithm to apply based on those criteria. share | improve this answer | follow | ...
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Implementing comparison operators via 'tuple' and 'tie', a good idea?

... else { return lexiLessthan(rest...); } } And the .cpp for the base case without arguments: bool lexiLessthan() { return false; } Now your example becomes: return lexiLessthan( lhs.one_member, rhs.one_member, lhs.another, rhs.another, lhs.yet_more, rhs.yet_more ); ...
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What do the arrow icons in Subclipse mean?

...electing from the drop-down allows switching between different remote code bases. - Shows only incoming changes (remote → local). - Shows only outgoing changes (local → remote). - Shows both incoming and outgoing changes (remote ↔ local). - Shows conflicting changes. - Updates all local r...
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How does node.bcrypt.js compare hashed and plaintext passwords without the salt?

...t this way, does it matter if attacker knows salt for certain user in data base like this: column_password = hash, column_salt = salt vs column_password = hash_salt. attacker still has same information. Point of salt is to make every password so random and bigger that it becomes unlikely someone h...
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Which method performs better: .Any() vs .Count() > 0?

...ve used LINQ to filter it etc (Where etc), you will have an iterator-block based sequence, and so this ICollection<T> optimisation is useless. In general with IEnumerable<T> : stick with Any() ;-p share ...
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Git: How to remove file from historical commit?

...refs. The filter-branch approach is considerably more powerful than the rebase approach, since it allows you to work on all branches/refs at once, renames any tags on the fly operates cleanly even if there have been several merge commits since the addition of the file operates cleanly even if t...
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Type of conditional expression cannot be determined because there is no implicit conversion between

... This is also the case if you have a nullable database field type, for example a nullable DateTime and you try and cast data to DateTime, when it infact required (DateTime?) – Mike Upjohn Sep 16 '15 at 14:58 ...
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Sequelize.js: how to use migrations and sync

... my project ready to launch. I have big plans for after launch and the database structure is going to change -- new columns in existing tables as well as new tables, and new associations to existing and new models. ...