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What is the purpose of “!” and “?” at the end of method names?

Sometimes I see methods in Ruby that have "?" and "!" at the end of them, e.g: 5 Answers ...
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Does Internet Explorer support pushState and replaceState?

Does anybody know if Internet Explorer supports the history.pushState() and history.replaceState() methods for manipulating browser history ? Considering these are just being implemented in Firefox 4, I'm not holding my breath, but does anybody know if they're coming in IE9? ...
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Split List into Sublists with LINQ

...fect of grouping them into groups of 3. Then convert each group to a list and the IEnumerable of List to a List of Lists share | improve this answer | follow ...
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What are some uses of template template parameters?

... all specializations of H. NOTE: I've been programming c++ for many years and have only needed this once. I find that it is a rarely needed feature (of course handy when you need it!). I've been trying to think of good examples, and to be honest, most of the time this isn't necessary, but let's co...
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How to get orientation-dependent height and width of the screen?

I'm trying to programmatically determine the current height and width of my application. I use this: 11 Answers ...
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Simple argparse example wanted: 1 argument, 3 results

...tiny beginner brain to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B do that, if none of the above show help and quit" . ...
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What does 'require: false' in Gemfile mean?

...application doensn't need. So I :require => false these particular gems and explicitly require "thegem" from the rake task. This would then save memory in the main app processes and startup time etc. App performance, however, should not be affected even if you require these additional gems in eve...
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How do I replace multiple spaces with a single space in C#?

... I have copy and paste that and it works. I really do not like REgex but this time it saves my life. – Pokus Oct 15 '08 at 22:22 ...
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log all sql queries

... '()': 'django.utils.log.RequireDebugTrue', } }, 'handlers': { 'console': { 'level': 'DEBUG', 'filters': ['require_debug_true'], 'class': 'logging.StreamHandler', } }, 'loggers': { 'django.db.backends': { ...
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Stacking Divs from Bottom to Top

... All the answers miss the scrollbar point of your question. And it's a tough one. If you only need this to work for modern browsers and IE 8+ you can use table positioning, vertical-align:bottom and max-height. See MDN for specific browser compatibility. Demo (vertical-align) .wrapp...