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What's the difference between and , and ?

What's the difference between <b> and <strong> , <i> and <em> in HTML/XHTML? When should you use each? ...
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git diff file against its last change

...ble to get git to produce a diff between a specific file as it exists now, and as it existed before the last commit that changed it? ...
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Various ways to remove local Git changes

I just cloned a git repository and checked out a branch. I worked on it, and then decided to remove all my local changes, as I wanted the original copy. ...
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How to change the value of ${user} variable used in Eclipse templates

...our best bet is to redefine the java user.name variable either at your command line, or using the eclipse.ini file in your eclipse install root directory. This seems to work fine for me: -showsplash org.eclipse.platform --launcher.XXMaxPermSize 256M -vmargs -Dosgi.requiredJavaVersion=1.5 -Duser.name...
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Base64 length calculation?

... * 6 = 24 bits = 3 bytes. So you need 4*(n/3) chars to represent n bytes, and this needs to be rounded up to a multiple of 4. The number of unused padding chars resulting from the rounding up to a multiple of 4 will obviously be 0, 1, 2 or 3. ...
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Webrick as production server vs. Thin or Unicorn?

... workers (in particular, pre-forking, life cycle management, asynchronous handling, etc), redirects, rewriting, etc When I mention redirects/rewrites, I'm referring to the fact that using Webrick, you have to handle rewrites at a different layer (Rack, Sinatra, Rails, custom Webrick code, etc). Th...
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Uppercase Booleans vs. Lowercase in PHP

...ere that you should always use the upper case versions of booleans, TRUE and FALSE , because the "normal" lowercase versions, true and false , weren't "safe" to use. ...
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What is an undefined reference/unresolved external symbol error and how do I fix it?

...efined reference/unresolved external symbol errors? What are common causes and how to fix/prevent them? 34 Answers ...
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What is the difference between URI, URL and URN? [duplicate]

What's the difference between an URI, URL and URN? I have read a lot of sites (even Wikipedia) but I don't understand it. 4...
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Should an Enum start with a 0 or a 1?

...ag enum values of zero unless the value represents "all flags are cleared" and is named appropriately, as prescribed by the next guideline. ✔️ DO name the zero value of flag enums None. For a flag enum, the value must always mean "all flags are cleared." ...