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How do I enumerate the properties of a JavaScript object? [duplicate]

...familiar with object-oriented programming would expect anything less! Typically, someone that brings this up has been subjected to Douglas Crockford's warnings about this, which still confuse me a bit. Again, inheritance is a normal part of OO languages and is therefore part of JavaScript, notwithst...
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Why doesn't RecyclerView have onItemClickListener()?

...The moment you have a click listener for any of the internal elements the callback would not be triggered but it wasn't notified or well documented (if at all) so there was a lot of confusion and SO questions about it. Given that RecyclerView takes it a step further and doesn't have a concept of a ...
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Never seen before C++ for loop

...#. In my opinion it is clearer, less of a trap for new programmers, and equally efficient. As others have pointed out -- but to make my answer complete -- to make it work in C# you would need to change while(u--) to while(u-- != 0). ... or while(u-- >0) just in case u starts off negative. (OK, ...
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Finding duplicate rows in SQL Server

...nd there are many duplicate rows. I want to run a select statement to grab all of these and the amount of dupes, but also return the ids that are associated with each organization. ...
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Regular expression to stop at first match

... your regular expression non-greedy, because by default, "(.*)" will match all of "file path/level1/level2" xxx some="xxx". Instead you can make your dot-star non-greedy, which will make it match as few characters as possible: /location="(.*?)"/ Adding a ? on a quantifier (?, * or +) makes it no...
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Vim users, where do you rest your right hand? [closed]

... I think that jkl; is actually the more appropriate usage for vi. For one, h and l really don't matter that much. w, e, and b are significantly more useful for horizontal navigation. As a bonus, ; is easy to get at if the language requires it. Having ...
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How to get the Display Name Attribute of an Enum member via MVC razor code?

I've got a property in my model called "Promotion" that its type is a flag enum called "UserPromotion". Members of my enum have display attributes set as follows: ...
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How to get just numeric part of CSS property with jQuery?

... This will clean up all non-digits, non-dots, and not-minus-sign from the string: $(this).css('marginBottom').replace(/[^-\d\.]/g, ''); UPDATED for negative values sh...
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What does |= (single pipe equal) and &=(single ampersand equal) mean

...icit cast, and the target variable is only evaluated once, but that's basically the gist of it. In terms of the non-compound operators, & is a bitwise "AND" and | is a bitwise "OR". EDIT: In this case you want Folder.Attributes &= ~FileAttributes.System. To understand why: ~FileAttribute...
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UITableView set to static cells. Is it possible to hide some of the cells programmatically?

...imated:YES]; Note to always use only (reloadDataAnimated:YES/NO) (dont call [self.tableView reloadData] directly) This doesn't use the hacky solution with setting height to 0 and allows you to animate the change and hide whole sections ...