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How to delete an item in a list if it exists?
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If index doesn't find the searched string, it throws the ValueError you're seeing. Either
catch the ValueError:
try:
i = s.index("")
del s[i]
except ValueError:
print "new_tag_list has no empty string"
or use fin...
rails 3.1.0 ActionView::Template::Error (application.css isn't precompiled)
I made a basic rails app with a simple pages controller with an index function and when I load the page I get:
14 Answers
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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
...hink that TryGetValue is still more efficient since the get and set of the indexer property is used, isn't it?
– Tim Schmelter
Oct 1 '15 at 10:44
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Merge and interleave two arrays in Ruby
...exactly elegant, but it works for arrays of any size:
>> a.map.with_index { |x, i| [x, i == a.size - 2 ? s.last : s.first] }.flatten[0..-2]
#=> ["Cat", "and", "Dog", "&", "Mouse"]
share
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getting type T from IEnumerable
...esort to getting the generic arguments and then grabbing the type from its indexer? That's just asking for disaster, especially when the language supports typeof(T) like @amsprich suggests in his/her answer, which can also be used with either a generic or a known type...
– Rob...
mongodb find by multiple array items
...nother way to do this in mangodb support page docs.mongodb.org/manual/core/indexes/#indexes-on-sub-documents and docs.mongodb.org/manual/core/indexes/#multikey-indexes
– Vivek Bajpai
Apr 1 '13 at 12:49
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Create JSON object dynamically via JavaScript (Without concate strings)
...s very helpful to me. I wanted to generate a json variable to pass it to a php script using ajax. My values were stored into two arrays, and i wanted them in json format.
This is a generic example:
valArray1 = [121, 324, 42, 31];
valArray2 = [232, 131, 443];
myJson = {objArray1: {}, objArray2: {}};...
Is it possible only to declare a variable without assigning any value in Python?
...ng* with value here
#we can just start using it right inside the loop
for index in sequence:
if conditionMet:
value = index
break
try:
doSomething(value)
except NameError:
print "Didn't find anything"
It's a little difficult to tell if that's really the right style to us...
What are the best practices for JavaScript error handling?
...roof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
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What is the difference between trie and radix trie data structures?
...Because in TRIE if you wan to search the next char you need to see the ith index in the child array of the current node but in radix tree you need search for all the child nodes sequentially. See the implementation code.google.com/p/radixtree/source/browse/trunk/RadixTree/src/…
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