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What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
I am a beginner to Ruby on Rails and I am using Rails 3.0.9.
3 Answers
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Visual Studio debugging “quick watch” tool and lambda expressions
...ariables become fields on compiler-generated classes), with a bit of smoke and mirrors.
As such, I'm not in the least surprised that you can't use them idly - there is a lot of compiler work (and type generation behind the scenes) that supports this magic.
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.NET HashTable Vs Dictionary - Can the Dictionary be as fast?
I am trying to figure out when and why to use a Dictionary or a HashTable. I have done a bit of a search on here and have found people talking about the generic advantages of the Dictionary which I totally agree with, which leads the boxing and unboxing advantage for a slight performance gain.
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Unresolved external symbol in object files
During coding in Visual Studio I got an unresolved external symbol error
and I've got no idea what to do. I don't know what's wrong.
Could you please decipher me? Where should I be looking for what kind of errors?
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Restricting input to textbox: allowing only numbers and decimal point
How can I restrict input to a text-box so that it accepts only numbers and the decimal point?
32 Answers
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How to resize a VirtualBox vmdk file
I've run out of space on a virtual machine disk which is a vmdk and need to resize the virtual image. Resizing with the command
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What RSA key length should I use for my SSL certificates?
I'm in the process of creating a CSR, and I wonder which is arguably the best length for my RSA key.
8 Answers
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What does the Reflect object do in JavaScript?
... http://people.mozilla.org/~jorendorff/es6-draft.html#sec-reflect-object and it sounds similar to the Proxy object apart from the realm and loader functionality.
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How do I replace text in a selection?
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This frustrated the heck out of me, and none of the above answers really got me what I wanted. I finally found the answer I was looking for, on a mac if you do ⌘ + option + F it will bring up a Find-Replace bar at the bottom of your editor which is local to t...
Panel.Dock Fill ignoring other Panel.Dock setting
If you create a panel on a form and set it to Dock=Top and drop another panel and set its Dock=Fill, it may fill the entire form, ignoring the first panel. Changing the tab order does nothing.
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