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Read first N lines of a file in python
...rmance to be similar, maybe the first to be slightly faster. But the first one won't work if the file doesn't have at least N lines. You are best to measure the performance against some typical data you will be using it with.
– John La Rooy
Nov 20 '09 at 0:47
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Why do x86-64 systems have only a 48 bit virtual address space?
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640kb is enough for anyone.
– user684934
Jul 16 '11 at 11:35
7
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Change Name of Import in Java, or import two classes with the same name
...t two classes with the same name and use both of them unqualified.
Import one class and use the fully qualified name for the other one, i.e.
import com.text.Formatter;
private Formatter textFormatter;
private com.json.Formatter jsonFormatter;
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Are there pronounceable names for common Haskell operators? [closed]
... (as it is the same as Control.Monad.ap)
$ (none, just as " " [whitespace])
. pipe to a . b: "b pipe-to a"
!! index
! index / strict a ! b: "a index b", foo !x: foo strict x
<|> or / alternative expr <|> term: "expr or term...
How do I get the current time zone of MySQL?
Anyone knows if there is such a function in MySQL?
17 Answers
17
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Can scrapy be used to scrape dynamic content from websites that are using AJAX?
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This one definitely is better.
– 1a1a11a
Jun 8 '15 at 21:38
1
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Redis is single-threaded, then how does it do concurrent I/O?
...lients by executing several flows corresponding to those clients with only one computation unit. In this context, parallelism would mean the server is able to perform several things at the same time (with multiple computation units), which is different.
For instance a bartender is able to look afte...
Synthetic Class in Java
...itch statement in it. You will see these variables when you have at least one switch statement anywhere in the class.
To answer your question, I don't believe you are able to access(other than reflection) the synthetic classes.
If you are analyzing a class that you don't know anything about (via...
Markdown vs markup - are they related?
...y the same thing? Are they related? Please explain. If I want to implement one or the other in a web project (like stackoverflow) what do I need to use?
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How do I generate a stream from a string?
... of characters. It is crucial to understand that converting a character to one or more bytes (or to a Stream as in this case) always uses (or assumes) a particular encoding. This answer, while correct in some cases, uses the Default encoding, and may not be suitable in general. Explicitly passing an...