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Length of generator output [duplicate]
...at is. But I couldn't find anything similar for lazy iterables represented by generator comprehensions and functions. Of course, it is not hard to write something like:
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What is the use of making constructor private in a class?
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By providing a private constructor you prevent class instances from being created in any place other than this very class. There are several use cases for providing such constructor.
A. Your class instances are created in a ...
What difference does .AsNoTracking() make?
...The difference is that in the first case the retrieved user is not tracked by the context so when you are going to save the user back to database you must attach it and set correctly state of the user so that EF knows that it should update existing user instead of inserting a new one. In the second ...
What does it mean when an HTTP request returns status code 0?
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I think you are probably right. (Although, as pointed out by @sleepycod wininet.dll would be expected to return some status code in the absence of a real http status code.)
– mike nelson
May 26 '09 at 21:17
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Salting Your Password: Best Practices?
...ough salt. Think about the birthday problem.
There's an excellent answer by Dave Sherohman to another question why you should use randomly generated salts instead of a user's name (or other personal data). If you follow those suggestions, it really doesn't matter where you put your salt in.
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Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes
...y). JSF will skip processing of all other components which are not covered by process attribute. Also, components whose rendered attribute evaluates to false during apply request values phase will also be skipped as part of safeguard against tampered requests.
Note that it's in case of ActionSource ...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
In the Mac and iOS platforms, memory leaks are often caused by unreleased pointers. Traditionally, it has always been of utmost importance to check your allocs, copies and retains to make sure each has a corresponding release message.
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What is the purpose of the single underscore “_” variable in Python?
...(/statement) in an interactive
interpreter session. This precedent was set by the standard CPython
interpreter, and other interpreters have followed suit
As a general purpose "throwaway" variable name to indicate that part
of a function result is being deliberately ignored (Conceptually, it is being...
Difference between single and double square brackets in Bash
... tests.
Double [[]] are an extension to the standard [] and are supported by bash and other shells (e.g. zsh, ksh). They support extra operations (as well as the standard posix operations). For example: || instead of -o and regex matching with =~. A fuller list of differences can be found in the ba...
Virtualbox “port forward” from Guest to Host [closed]
...//127.0.0.1:8000
or your network ip address (find out on the host machine by running: ipconfig).
Network communication Guest -> Host
In this case port forwarding is not needed, the communication goes over the LAN back to the host.
On the host machine - find out your netw ip address:
ipconfig
ex...