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@import Photos; | |
[PHPhotoLibrary requestAuthorizationForAccessLevel:PHAccessLevelReadWrite handler:^(PHAuthorizationStatus status) { | |
NSLog(@"PHAuthorizationStatus: %ld", status); | |
PHFetchOptions *fetchOptions = [[PHFetchOptions alloc] init]; | |
fetchOptions.includeHiddenAssets = YES; | |
fetchOptions.includeAllBurstAssets = YES; | |
PHFetchResult<PHAsset *> *result = [PHAsset fetchAssetsWithOptions:fetchOptions]; |
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# Install tmux 2.8 on Centos | |
# install deps | |
yum install gcc kernel-devel make ncurses-devel | |
# cd src | |
cd /usr/local/src | |
# DOWNLOAD SOURCES FOR LIBEVENT AND MAKE AND INSTALL | |
curl -LO https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz |
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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 |