大约有 10,300 项符合查询结果（耗时：0.0139秒） [XML]
How to inherit constructors?
...ong typing, default values, and other benefits not provided by a parameter array. It also makes it easy to carry forward since anything that inherits from Foo can still get to, or even add to, FooParams as needed. You still need to copy the constructor, but you always (most of the time) only (as a...
Get names of all files from a folder with Ruby
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In Ruby 2.5 you can now use Dir.children. It gets filenames as an array except for "." and ".."
Example:
Dir.children("testdir") #=> ["config.h", "main.rb"]
http://ruby-doc.org/core-2.5.0/Dir.html#method-c-children
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How to randomize (or permute) a dataframe rowwise and columnwise?
...irst argument. This means that the default size is the size of the passed array. Passing parameter replace=FALSE (the default) to sample(...) ensures that sampling is done without replacement which accomplishes a row wise shuffle.
Shuffle column-wise:
> df3 <- df1[,sample(ncol(df1))]
> ...
Convert String to SecureString
...is:
string password = "test";
SecureString sec_pass = new SecureString();
Array.ForEach(password.ToArray(), sec_pass.AppendChar);
sec_pass.MakeReadOnly();
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Check if object exists in JavaScript
...sts, typeof o == "object" may be a good idea, except if you don't consider arrays objects, as this will also reported to be the type of object which may leave you a bit confused. Not to mention that typeof null will also give you object which is simply wrong.
The primal area where you really should...
Ruby: Easiest Way to Filter Hash Keys?
...ct { |key| key.to_s.match(/^choice\d+/) }
and this will give the just an Array of the keys e.g. [:choice1, :choice2, :choice3]
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How to randomly select an item from a list?
... will always return 'c'
For samples of one or more items, returned as an array, pass the size argument:
np.random.choice(foo, 5) # sample with replacement (default)
np.random.choice(foo, 5, False) # sample without replacement
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How to get the command line args passed to a running process on unix/linux systems?
... give a detailed list of arguments passed to a process. It will output the array of arguments in like this:
argv[o]: first argument
argv[1]: second..
argv[*]: and so on..
I didn't find any similar command for Linux, but I would use the following command to get similar output:
tr '\0' '\n' < /...
Insert spaces between words on a camel-cased token [duplicate]
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See: .NET - How can you split a "caps" delimited string into an array?
Especially:
Regex.Replace("ThisIsMyCapsDelimitedString", "(\\B[A-Z])", " $1")
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VBA - how to conditionally skip a for loop iteration
I have a for loop over an array. What I want to do is test for a certain condition in the loop and skip to the next iteration if true:
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