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Expert R users, what's in your .Rprofile? [closed]
...se it might breaks my coauthors' code, I wish it was the default. Why?
1) Character vectors use less memory (but only barely);
2) More importantly, we would avoid problems such as:
> x <- factor(c("a","b","c"))
> x
[1] a b c
Levels: a b c
> x <- c(x, "d")
> x
[1] "1" "2" "3" "...
Rails: how do I validate that something is a boolean?
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This does not work, as any string eg, "foo" will be converted into true.
– Ka Mok
Jun 4 '18 at 22:55
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...
Unable to generate an explicit migration in entity framework
...ure to check your startup project is one with your db context's connection string. I had this problem when I temporarily changed my startup project and didn't realize that the other project didn't have the same connection string.
– Gage Trader
Aug 3 '16 at 21:5...
未能从“const std::string”为“const std::_Tree &”推导 模板 参数 - C/...
未能从“const std::string”为“const std::_Tree &”推导 模板 参数参考：http: www tsingfun com html 2016 dev_0630 1876 html参考：https://www.tsingfun.com/it/cpp/1876.htmlstl 模板 参数
Java: PrintStream to String?
...presentation of that object. How can I capture this function's output in a String? Specifically, I want to use it as in a toString method.
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Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence
... json.dumps(), then encode the value to UTF-8 manually:
>>> json_string = json.dumps("ברי צקלה", ensure_ascii=False).encode('utf8')
>>> json_string
b'"\xd7\x91\xd7\xa8\xd7\x99 \xd7\xa6\xd7\xa7\xd7\x9c\xd7\x94"'
>>> print(json_string.decode())
"ברי צקלה"
If...
What's the best UI for entering date of birth? [closed]
...as passed all
trials and is ready to strike. Datejs doesn’t just parse strings, it
slices them cleanly in two.
How to use getJSON, sending data with post method?
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When I am using the above function, I am receiving a string object instead of a json object.
– Pratik Singhal
Jun 22 '16 at 14:04
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Non-alphanumeric list order from os.listdir()
...
You can use the builtin sorted function to sort the strings however you want. Based on what you describe,
sorted(os.listdir(whatever_directory))
Alternatively, you can use the .sort method of a list:
lst = os.listdir(whatever_directory)
lst.sort()
I think should do the...
Difference between Property and Field in C# 3.0+
...uick, obvious differences
A property can have accessor keywords.
public string MyString { get; private set; }
A property can be overridden in descendents.
public virtual string MyString { get; protected set; }
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