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Generator Expressions vs. List Comprehension
...ly still apply when iterating multiple times? I'd say it might make a list more useful, but whether that's enough to outweigh memory concerns is something else.
– Rob Grant
Aug 29 '14 at 14:09
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What's the difference between an id and a class?
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TBH, nobody use id any more unless it has something to do with integration with JavaScript (when you need an unique value). It is html leftover and you do not need to use it just because it exists. Saying that you have only one header and such so y...
How to change the default encoding to UTF-8 for Apache?
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How to remove the hash from window.location (URL) with JavaScript without page refresh?
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Passing a single item as IEnumerable
...s. You could use a read-only collection, but that's likely to involve even more wrapping. I think your solution is as neat as it gets.
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When should the volatile keyword be used in C#?
... a lie. The true semantics of volatile reads
and writes are considerably more complex than I've outlined here; in
fact they do not actually guarantee that every processor stops what it
is doing and updates caches to/from main memory. Rather, they provide
weaker guarantees about how memory ac...
Fetch the row which has the Max value for a column
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Rails: create on has_one association
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A more concise way to do this is with:
@user.create_shop(params[:shop])
See methods added by has_one in the Ruby on Rails guides.
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Validate uniqueness of multiple columns
... can pass multiple scope params in case you need to validate uniqueness on more than 2 fields. I.e. :scope => [:friend_id, :group_id]
– Dave Rapin
May 2 '11 at 16:36
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Should I use s and s inside my s?
... my opinion, a <nav> without <ul><li> seems it will have more dynamic children menus. What if you have multiple menu lists which are a different type and positioning in the <nav>? I would group those menu lists as <ul><li> in the <nav>. So if your menus have...