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Breadth First Vs Depth First
...alking a tree.
It is probably easiest just to exhibit the difference. Consider the tree:
A
/ \
B C
/ / \
D E F
A depth first traversal would visit the nodes in this order
A, B, D, C, E, F
Notice that you go all the way down one leg before moving on.
A breadth first traversa...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...ect", 2008-02-13, Git v1.5.5-rc0 -- merge), and the function now known as oid_object_info() was taught the empty tree in c4d9986f5f ("sha1_object_info: examine cached_object store too", 2011-02-07, Git v1.7.4.1).
Note, you will see that SHA1 pop up on some GitHub repo when the author wants it...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...rmula:
set = ( address / lineSize ) % numberOfsets
This sort of formula ideally gives a uniform distribution across the sets, because each memory address is as likely to be read (I said ideally).
It's clear that overlaps can occur. In case of a cache miss, the memory is read in the cache and the...
Library? Static? Dynamic? Or Framework? Project inside another project
...s://github.com/jverkoey/iOS-Framework
This is a pretty straight-forward guide and doesn't have the disadvantage of dealing with "fake static libraries"... check it out for more info...
Once you've created your static library, it's as easy as including it as a submodule within Git for use across di...
What is Ember RunLoop and how does it work?
... silly to asks and dependant on many things but I am looking for a general idea, or maybe if there is a minimum or maximum time a runloop may take)
At no point will the RunLoop ever keep track of how much time it's taking to propagate all the changes through the system and then halt the RunLoop aft...
Using Kafka as a (CQRS) Eventstore. Good idea?
...
I was looking at Kafka and had another concern: I didn't notice anything about optimistic-concurrency. Ideally I could say: "Add this event as item N+1 only if the object's most recent event is still N."
– Darien
Sep 23 '14 at 3:33
...
ReactJS: Modeling Bi-Directional Infinite Scrolling
...or this is to set the image dimensions in your img tag: <img src="..." width="100" height="58" />. This way the browser doesn't have to wait to download it before knowing what size it is going to be displayed. This requires some infrastructure but it's really worth it.
If you can't know the s...
Clang optimization levels
...echo 'int;' | clang -xc -O3 - -o /dev/null -\#\#\#
Documentation of individual passes is available here.
With version 6.0 the passes are as follow:
baseline (-O0):
opt sets: -tti -verify -ee-instrument -targetlibinfo -assumption-cache-tracker -profile-summary-info -forceattrs -basiccg -al...
Reset/remove CSS styles for element only
...und-size : auto auto;
border : 0;
border-style : none;
border-width : medium;
border-color : inherit;
border-bottom : 0;
border-bottom-color : inherit;
border-bottom-left-radius : 0;
border-bottom-right-radius : 0;
border-bottom-style : none;
border-bottom-wid...
For-each over an array in JavaScript
... from its prototype), and
That the key is all decimal digits (e.g., normal string form, not scientific notation), and
That the key's value when coerced to a number is <= 2^32 - 2 (which is 4,294,967,294). Where does that number come from? It's part of the definition of an array index in the speci...