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How to avoid having class data shared among instances?
...problem you face is that x.list and y.list are the same list, so when you call append on one, it affects the other.
– Matt Moriarity
Nov 5 '09 at 14:04
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Show SOME invisible/whitespace characters in Eclipse
A long while back I transitioned to doing all my web application development in Eclipse from BBEdit. But I miss one little feature from BBEdit. I used to be able to show invisible characters like tabs but not show other invisibles like spaces. I know that I can bulk turn all of these on in Eclipse, ...
What is a Context Free Grammar?
...y and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are?
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Using TortoiseSVN how do I merge changes from the trunk to a branch and vice versa?
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The behavior depends on which version your repository has. Subversion 1.5 allows 4 types of merge:
merge sourceURL1[@N] sourceURL2[@M] [WCPATH]
merge sourceWCPATH1@N sourceWCPATH2@M [WCPATH]
merge [-c M[,N...] | -r N:M ...] SOURCE[@REV] [WCPATH]
merge --reintegrate SOURCE[@REV] [WCPATH]
Subvers...
The purpose of Model View Projection Matrix
...d space to camera space, projection from camera to screen.
If you compose all three, you can use the one result to map all the way from object space to screen space, making you able to work out what you need to pass on to the next stage of a programmable pipeline from the incoming vertex positions....
What do REFRESH and MERGE mean in terms of databases?
...database into my representation". Cascading this is simple; it means that all associated entities are refreshed.
MERGE means something complex that approximates "save" but is more like "push this detached entity back into managed status and save its state changes"; the cascading means that all ass...
Pry: show me the stack
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Use the pry-stack_explorer plugin, it allows you to move up and down the call-stack (with up and down), display the callstack (with show-stack), and so on:
see here:
Frame number: 0/64
From: /Users/johnmair/ruby/rails_projects/personal_site/app/controllers/pos...
Useful example of a shutdown hook in Java?
...tting down gracefully. I am reading about shutdown hooks and I don't actually get how to make use of them in practice.
2 ...
Benefits of header-only libraries
...re the library might be used. When you separate the implementation, you usually do so to hide implementation details, and distribute the library as a combination of headers and libraries (lib, dll's or .so files). These of course have to be compiled for all different operating systems/versions you o...
how do you push only some of your local git commits?
...ot have to use master~3. Any reference to the desired "up to" commit is equally valid, such as HEAD~3 or HEAD~~~, or the specific SHA, or a tag which labels that commit.
– Kaz
Jul 4 '14 at 18:49
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