大约有 35,100 项符合查询结果（耗时：0.0310秒） [XML]
Why does a function with no parameters (compared to the actual function definition) compile?
...unction.
parameter-list is the list of parameters that the function takes separated by commas. If no parameters are given, then the function
does not take any and should be defined with an empty set of
parenthesis or with the keyword void. If no variable type is in front
of a variable in ...
How to initialize a private static const map in C++?
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+1 for simplicity, of course using a Boost.Assign like design is pretty neat too :)
– Matthieu M.
Apr 14 '10 at 11:33
5
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How can I use if/else in a dictionary comprehension?
Does there exist a way in Python 2.7+ to make something like the following?
4 Answers
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Python dictionary: Get list of values for list of keys
Is there a built-in/quick way to use a list of keys to a dictionary to get a list of corresponding items?
11 Answers
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Removing all empty elements from a hash / YAML?
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You could add a compact method to Hash like this
class Hash
def compact
delete_if { |k, v| v.nil? }
end
end
or for a version that supports recursion
class Hash
def compact(opts={})
inject({}) do |new_hash, (k,v)|
if !v.nil?
new_hash[k...
How to automatically indent source code?
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Ctrl+E, D - Format whole doc
Ctrl+K, Ctrl+F - Format selection
Also available in the menu via Edit|Advanced.
Thomas
Edit-
Ctrl+K, Ctrl+D - Format whole doc in VS 2010
share
...
Changing every value in a hash in Ruby
...:
# 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 1.8.6+
new_hash = Hash[*my_hash.map{|k,str| [k,"%#{str}%"] }.flatten]
# Ruby 1.8.7+
new_hash = ...
Batch files : How to leave the console window open
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If that is really all the batch file is doing, remove the cmd /K and add PAUSE.
start /B /LOW /WAIT make package
PAUSE
Then, just point your shortcut to "My Batch File.bat"...no need to run it with CMD /K.
UPDATE
Ah, some new info...you're trying to do it from a pinned shortcut on t...
Remove an element from a Bash array
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The following works as you would like in bash and zsh:
$ array=(pluto pippo)
$ delete=pluto
$ echo ${array[@]/$delete}
pippo
$ array=( "${array[@]/$delete}" ) #Quotes when working with strings
If need to delete more than one element:
...
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Is it possible to Pivot data using LINQ?
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Something like this?
List<CustData> myList = GetCustData();
var query = myList
.GroupBy(c => c.CustId)
.Select(g => new {
CustId = g.Key,
Jan = g.Where(c => c.OrderDate.Month == 1).Sum(c => c.Q...