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What is the purpose of the reader monad?
... is it equipped with? What is it good for?
How is the monad implemented? From where does it arise?
From the first approach, the reader monad is some abstract type
data Reader env a
such that
-- Reader is a monad
instance Monad (Reader env)
-- and we have a function to get its environment
as...
PHP_SELF vs PATH_INFO vs SCRIPT_NAME vs REQUEST_URI
...y string, some redirection, some aliases, on different operating systems, from CLI vs SERVER, etc.
– user2066805
Dec 15 '15 at 22:35
4
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What are carriage return, linefeed, and form feed?
... beginning of the current line without advancing downward. The name comes from a printer's carriage, as monitors were rare when the name was coined. This is commonly escaped as \r, abbreviated CR, and has ASCII value 13 or 0x0D.
Linefeed means to advance downward to the next line; however, it has...
Send file using POST from a Python script
Is there a way to send a file using POST from a Python script?
8 Answers
8
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How to delete all records from table in sqlite with Android?
...
You missed a space: db.execSQL("delete * from " + TABLE_NAME);
Also there is no need to even include *, the correct query is:
db.execSQL("delete from "+ TABLE_NAME);
share
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Default visibility for C# classes and members (fields, methods, etc.)?
...tion you are looking for can be found here and here (thanks Reed Copsey):
From the first link:
Classes and structs that are declared directly within a namespace (in other words, that are not nested within other classes or structs) can be either public or internal. Internal is the default if no ...
Issue with adding common code as git submodule: “already exists in the index”
...projects. I created a separate git repo for the common code and removed it from the projects with the plan to add it as a git submodule.
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
...doesn't let the second one compile, complaining about narrowing conversion from double to value_type, but clang++ 2.9 is OK with both!
– Cubbi
May 24 '11 at 17:27
21
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How to use Class in Java?
... Static method always needs explicit <T> declaration; It wont derive from class level Class<T>. This is because of Class level T is bound with instance.
Also read Restrictions on Generics
Wildcards and Subtyping
type argument for a generic method
...
Is there a Python function to determine which quarter of the year a date is in?
...for first quarter, 1 for second quarter, etc -- add 1 if you need to count from 1 instead;-).
Originally two answers, multiply upvoted and even originally accepted (both currently deleted), were buggy -- not doing the -1 before the division, and dividing by 4 instead of 3. Since .month goes 1 to...