text stringlengths 1 330k |
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0 -> a |
1 -> b |
2 -> c |
4 -> e |
5 -> f |
6 -> g |
How to delete an element by using value ( not key ) from an array |
In the above examples we have used key if the array as input to remove the element from the array. If we don't know the key and we know the value then how to remove the element? There is no direct function to do this but we can use array_diff function to remove the element by using the value. Note that array_diff funct... |
We can also use like this to remove more elements by using its value. |
If you want you can display & check our elements like this. |
while (list ($key, $val) = each ($new_array)) { |
The output of the above command is here |
0 -> a |
1 -> b |
3 -> d |
4 -> e |
6 -> g |
You can read how unset a variable here. |
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6 comments on Saccharine |
“Draw a crazy picture, |
Write a nutty poem, |
Sing a mumble-gumble song, |
Whistle through your comb. |
Do a loony-goony dance |
'Cross the kitchen floor, |
Put something silly in the world |
That ain't been there before.” |
spin the tunes and hear your songs |
pack the glass and light the bongs |
hope it's kind and crystal good |
sugar coat my neighborhood |
sweeter than your vast expanse |
at least until we get to dance |
= D |
C LIT 496: Special Studies In Comparative Literature |
Folktales Along the Silk Road |
Section ID: |
Meets Department Requirements: |
Literature Elective |
Meets GE Requirements: |
Visual, Literary, and Performing Arts |
Meets Other Requirements: |
Cirtautas, Ilse D |
M W 13:30-14:50 |
DEN 302 |
Offered occasionally by visitors or resident faculty. Content varies. |
w/ NEAR E 496/596 |
The course will introduce folktales from Mongolia, at the eastern end of the Silk Road, and proceeding westwards, we will get acquainted with Uzbek, Tajik, Kazakh, Kirghiz, Turkmen and Turkish folktales. After discussing the various types of folktales and their structure, we will trace the origin and changes of certai... |
The course will also pay attention to the question of the origin of the folktale and its connection to other oral literary genres, such as the epic song. Among the Mongolian-Turkic nomads certain types of folktales, namely animal stories, have been told at hunting grounds to appease the animals to be hunted. Stories ... |
Last updated: February 28, 2014 - 9:10pm |
from The God of Carnage |
Best of 2010-2011: Tracey Maloney |
One year ago I knew absolutely nothing about the sport of football. A year later, I found myself sitting in a bar having a heated argument with a close friend before the big draft in our Fantasy Football league. I had devoted the past year to reading Sports Illustrated and following online football blogs, so I could le... |
After a few hours and too many beers, I could feel my sports-loving friend dreading the moment that was coming—it was, after all, unavoidable. When you are having drinks with a person who works in the Arts, you will eventually have to ask about what is currently happening in their artistic life. If your sports-loving f... |
But the childlike passion my friends feel when they scream over the Vikings or Twins is the same passion I feel when I am arguing with a friend who also works in the Arts over two theater companies take on the same show. I can go out with a performing artist friend and have long, exhausting arguments over countless asp... |
Imagine a world where fans of football watched the game without understanding how the players earned a touchdown. How could plays be differentiated from one another or even understood without a sense of how they work toward a goal? How could fans choose skilled players from flukes? It would be impossible to build a fan... |
theater, be like sports |
Actors are also athletes. Directors are like head coaches, and the script can be considered the playbook for the evening. The success or failure of a show is less important than the means of presentation; the way a play is performed should become the backbone for the critic to analyze. |
If reviewers wrote reviews in the spirit that sportswriters write about athletes than the audience would become knowledgeable about different teams (theater companies) and players (actors/directors/designers) in the same way sports fans follow teams and players during the season. The specific games (performances) becom... |
Around forty minutes into God of Carnage at the Guthrie Theater, actress Tracey Maloney, who had crafted a character that appears to be the quiet, beautiful, sophisticated wife of a loud, obnoxious fast-talking husband, was about to unleash her inner beast. Suddenly, she grabs the flowers she brought as a gift at the t... |
How did Maloney make such a huge character shift believable? |
In Yasmina Reza’s play, wild emotional swings can seem empty and untruthful when not fully disciplined. Like her costars, Tracy meticulously mapped her character’s shifts from the moment she entered the stage. In an apartment space designed for status battles, Tracey’s Annette at first avoided most eye contact and dart... |
These initial character choices provided plenty of room for growth over the course of the 90 minute play and allowed for huge comic surprises. After the first few fights, the audience is dying for Annette to give up the nice girl image and join the rest of the bullies on the playground. Tracey manipulates this anticipa... |
I wish more theaters were able to grab the same kind of wildly obsessive fans that fill the seats of stadiums and arenas every year. Too often my friends claim a general appreciation for the arts but cheer for no specific theaters during the season. They may enjoy going to theater but do not know the difference between... |
I long for the day one of my friends get the itch to learn about the arts in the same way I suddenly wanted to understand football. Unfortunately, I think they would have to study for a long time before playing Fantasy Performance because technique is kept out of reviews. There is nowhere for them to learn the terms ne... |
Take the 2-minute tour × |
Update: because recordsize defaults to 128k, the amount of data read by the test program is much larger than the ARC on an 8GB system and still slightly larger than the ARC on a 16GB system. Reducing the recordsize allows less data to be read and therefore it fits in the ARC. I was underestimating the size of the data ... |
This load is similar to an IMAP/Maildir scenario with many directories, many files, and potentially only small amounts of data read from a each file. |
I have tested using FreeBSD 10 and Fedora 19 with zfsonlinux. I have tested various linux native filesystems, like extX/xfs/jfs and even btrfs. On FreeBSD I tested using the native ufs filesystem as well. My workload is simply scanning a largish music collection using amarok/winamp/etc. My test program is amarok_collec... |
Subsequent runs of a scan are incredibly fast using a non-zfs filesystem, usually around 30 seconds. ZFS makes only marginal improvements with subsequent runs. It's also obvious from watching iostat that after an initial run on an non-ZFS filesystem the OS doesn't touch the disk. It's all in the filesystem cache. |
Using an SSD cache for ZFS improves the time, but it never gets anywhere near 30 seconds. |
Why doesn't ZFS cache this load? One possibility I explored was that the size of the ARC was limited to less than what a non-ZFS filesystem is allowed to use for caching. I tested again on a machine with more memory available to the ARC than the entire available memory on the first test system and the numbers stayed th... |
I hope to find/create a fio recipe that duplicates this kind of load. Basically it would need to create thousands of smallish files, scan all the directories looking for the files, open each file and read a small amount of data from each one. It is like the world's worst database! I will probably test OpenIndiana next ... |
The data set is 353GB, and 49,000 files. The test systems had 8GB-16GB of RAM. The zpool configuration made very little difference but the tests I care about were always just one whole disk. I used ST3500630AS and WDC WD20EZRX-00D8PB0 among other drives. The drives made almost no difference. The amount of RAM or the sp... |
On a single ST3500630AS drive I got these numbers for the default filesystem options for the following filesystems. This was on Fedora 19, 8GB of RAM, 3.11.10-200 kernel, ZFS 0.6.2-1. The values are in seconds. Subsequent scans were run without any attempt to clear the cache. |
ZFS: 900, 804, 748, 745, 743, 752, 741 |
btrfs: 545, 33, 31, 30, 31, 31 |
ext2: 1091, 30, 30, 30, 30, 30... |
ext3: 1014, 30, 30, 30, 30, 30... |
ext4: 554, 31, 31, 32, 32, 31, 31... |
jfs: 454, 31, 31,31,31... |
xfs: 480, 32, 32, 32, 32 ,31 ,32, etc. |
On FreeBSD 10, single drive WD20EZRX-00D8PB0, faster machine, 16GB of memory, ARC allowed to grow to 12GB: |
ufs: 500, 18, 18... |
zfs: 733, 659, 673, 786, 805, 657 |
Although the the above variables sometimes had an effect on the initial cold cache scan of the data, it's the subsequent runs that look all the same. Standard filesystems cache it all and therefore as long as nothing else thrashes the cache perform lightning fast. ZFS doesn't exhibit that behaviour. |
share|improve this question |
ZFs is not well suited to desktop workloads. – Michael Hampton Mar 6 at 18:10 |
So scanning a bunch of files and reading data from them is a desktop workload? It certainly seems to me that this workload would be a lot like a Maildir/IMAP server. The files are slightly larger but the amount of data read from each one is small in both cases. This was tested on Xeon systems with ECC memory although t... |
Can you provide some solid numbers? How much RAM is in the system? What is the size of the data set? How big are the disks? How big are the SSD devices? What is your zpool configuration? How about your zfs filesystem settings? – ewwhite Mar 6 at 18:31 |
2 Answers 2 |
Start with disabling atime if not already done. |
You might also investigate setting primarycache=metadata impact. |
share|improve this answer |
I do disable atime on all the filesystems where that is an option, but it was a good suggestion. It would seem that setting primarycache to metadata would cause zfs to cache even less than it currently does but since it costs me nothing but time to try it, I probably will. – aranc23 Mar 7 at 15:38 |
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