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@jamesreggio
jamesreggio / SFSafariViewController-radars.md
Last active August 17, 2018 05:32
Summary of bugs in SFSafariViewController affecting adoption within the Twitter iOS client

In the process of evaluating the suitability of SFSafariViewController (SFSVC) for use within the Twitter iOS client, I encountered a number of bugs with differing severities, all of which I filed as Radars in Apple's bug reporting tool. Here is my attempt to holistically document their impact on our ability to adopt SFSafariViewController as a replacement for our existing WebViews.

Highest Severity

The fundamental blocker is Radar

@staltz
staltz / introrx.md
Last active June 21, 2024 12:27
The introduction to Reactive Programming you've been missing
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

@jboner
jboner / latency.txt
Last active June 22, 2024 06:13
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD