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What is a Context Free Grammar?
Can someone explain to me what a context free grammar is? After looking at the Wikipedia entry and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are?
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Why is std::map implemented as a red-black tree?
... Missing from all this is the cost, per-node, to store the auxilary information required to make balance decisions. Red-Black trees require 1-bit to represent the colour. AVL trees require at least 2 bits (to represent -1, 0 or 1).
– SJHowe
Sep 12 '17 at...
Word wrapping in phpstorm
... to consider the Wrap to Column plugin, which implements the equivalent to Alt-q in Emacs and gq in vim. This may be preferable to having very long lines that are wrapped by the editor.
This plugin can be installed from any IDEA-based IDE by searching for Wrap to Column.
It has the additional bene...
Best PHP IDE for Mac? (Preferably free!) [closed]
I need to find a good PHP IDE for Mac , but would prefer a free one.
3 Answers
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How do I change screen orientation in the Android emulator?
.../landscape forwards
F8 Toggle cell network
F9 Toggle code profiling
Alt+Enter Toggle fullscreen mode
F6 Toggle trackball mode
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Is it possible to program iPhone in C++
...bjective-C would be pretty simple, if you decided to give that a try. More info on that topic is at the ADC as well.
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How to prepare a Unity project for git? [duplicate]
...ould now open your Unity project while holding down the Option or the Left Alt key. This will force Unity to recreate the Library directory (this step might not be necessary since I've seen Unity recreating the Library directory even if you don't hold down any key).
Finally have git ignore the Libr...
Best Way to read rss feed in .net Using C#
...s/posts/default" (Atom 1.0) and "blogname.blogspot.com/feeds/posts/default?alt=rss" for RSS 2.0. The SyndicationItem item has all the item properties you'll need. Just examine the object in the Visual Studio debugger and be illuminated.
– secretwep
Oct 29 '13...
How to find what code is run by a button or element in Chrome using Developer Tools
... Event is an open-source Javascript bookmarklet which provides
debugging information about events that have been attached to DOM
elements. Visual Event shows:
Which elements have events attached to them
The type of events attached to an element
The code that will be run with the even...
How to detect if a stored procedure already exists
...procedure }
[ ,...n ]
Query:
DROP PROCEDURE IF EXISTS usp_name
More info here
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