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Linq to Entities - SQL “IN” clause
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{
//Do stuff on each selected user;
}
Syntactically this looks more complex, and you have to understand the concept of lambda expressions or delegates to really figure out what's going on, but as you can see, this condenses the code a fair amount.
It all comes down to your coding style and p...
How to check for an undefined or null variable in JavaScript?
...ou don't care about
0 and false, using if(obj.undefProp) is ok. There's a common idiom based on this fact:
value = obj.prop || defaultValue
which means "if obj has the property prop, assign it to value, otherwise assign the default value defautValue".
Some people consider this behavior confusin...
Difference between string object and string literal [duplicate]
...ring literal notation when possible. It is easier to read and it gives the compiler a chance to optimize your code.
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CSS force image resize and keep aspect ratio
...CSS:</p>
<img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png">
This will make image shrink if it's too big for specified area (as downside, it will not enlarge image).
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How to launch html using Chrome at “--allow-file-access-from-files” mode?
...n extension for your executable... So if you move to Chrome's folder, this command will probably work too :
> .\chrome.exe --allow-file-access-from-files
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In Python, what is the difference between “.append()” and “+= []”?
...right-hand-side list into the left-hand-side list.
Update: perf analysis
Comparing bytecodes we can assume that append version wastes cycles in LOAD_ATTR + CALL_FUNCTION, and += version -- in BUILD_LIST. Apparently BUILD_LIST outweighs LOAD_ATTR + CALL_FUNCTION.
>>> import dis
>>&...
Difference between EXISTS and IN in SQL?
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...gem so thought I'd share as it was inspired by this post.
https://github.com/appoxy/aws/blob/master/lib/awsbase/require_relative.rb
unless Kernel.respond_to?(:require_relative)
module Kernel
def require_relative(path)
require File.join(File.dirname(caller[0]), path.to_str)
end
e...
Is it possible to change a UIButtons background color?
...ssibility". for you consideration.
As this is an old answer, I strongly recommend reading comments for troubleshooting
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Correct way to write line to file?
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no you don't: stackoverflow.com/questions/3012488/…
– Tal Jerome
Oct 6 '14 at 7:54
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