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Fix warning “Capturing [an object] strongly in this block is likely to lead to a retain cycle” in AR
... says that using keyword block and setting the variable to nil after using it inside the block should be ok, but it still shows the warning.
__block ASIHTTPRequest *request = [[ASIHTTPRequest alloc] initWithURL:...
[request setCompletionBlock:^{
NSDictionary *jsonDictionary = [[CJSONDeserializ...
Is it possible to import a whole directory in sass using @import?
I am modularizing my stylesheets with SASS partials like so:
13 Answers
13
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
...is worked for me. I needed to do bundle update rake first. Then I checked with bundle show rake. It should say 0.8.7. Then rake db:migrate.
– B Seven
May 23 '11 at 1:25
26
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What is the opposite of :hover (on mouse leave)?
Is there any way to do the opposite of :hover using only CSS? As in: if :hover is on Mouse Enter , is there a CSS equivalent to on Mouse Leave ?
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Kotlin secondary constructor
...tring? = null) {...}
usage:
val c1 = C("foo") // parameter passed explicitly
val c2 = C() // default value used
Note that default values work for any function, not only for constructors
Technique 3. (when you need encapsulation) Use a factory method defined in a companion object
Sometimes you...
Changing every value in a hash in Ruby
...ash to change in place, but you don't want to affect the strings (you want it to get new strings):
# Two ways to achieve the same result (any Ruby version)
my_hash.each{ |key,str| my_hash[key] = "%#{str}%" }
my_hash.inject(my_hash){ |h,(k,str)| h[k]="%#{str}%"; h }
If you want a new hash:
# Ruby...
Visual Studio 2012 - Intellisense sometimes disappearing / broken
...king several hours the intellisense is broken. After closing all open tabs it works again.
21 Answers
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Under what circumstances are linked lists useful?
Most times I see people try to use linked lists, it seems to me like a poor (or very poor) choice. Perhaps it would be useful to explore the circumstances under which a linked list is or is not a good choice of data structure.
...
Bash set +x without it being printed
Does anyone know if we can say set +x in bash without it being printed:
5 Answers
5
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Why does pylint object to single character variable names?
...
PyLint checks not only PEP8 recommendations. It has also its own recommendations, one of which is that a variable name should be descriptive and not too short.
You can use this to avoid such short names:
my_list.extend(x_values)
Or tweak PyLint's configuration to te...