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What is the most ridiculous pessimization you've seen? [closed]
... to unreadable/unmaintainable code. Even worse is pessimization, when someone implements an "optimization" because they think it will be faster, but it ends up being slower, as well as being buggy, unmaintainable, etc. What is the most ridiculous example of this that you've seen?
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How do you find the row count for all your tables in Postgres
...to find the row count for all my tables in Postgres. I know I can do this one table at a time with:
15 Answers
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Bash function to find newest file matching pattern
...or file in "$dir"/*; do
[[ $file -nt $latest ]] && latest=$file
done
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How do I use sudo to redirect output to a location I don't have permission to write to?
I've been given sudo access on one of our development RedHat linux boxes, and I seem to find myself quite often needing to redirect output to a location I don't normally have write access to.
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HTTP 1.0 vs 1.1
... 1.0 does not officially require a Host header, but it doesn't hurt to add one, and many applications (proxies) expect to see the Host header regardless of the protocol version.
Example:
GET / HTTP/1.1
Host: www.blahblahblahblah.com
This header is useful because it allows you to route a message ...
iPhone Keyboard Covers UITextField
...verything above it) up with an animation, and then back down when you are done. You may need to put the text field and some of the other items into another view and slide the view as a unit. (I call these things "plates" as in "tectonic plates", but that's just me). But here is the general idea i...
Why do you need ./ (dot-slash) before executable or script name to run it in bash?
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Just a note to everyone saying this is only in Unix and not Windows, this is the same in Powershell - you have to do .\my.bat etc to execute
– manojlds
Jun 13 '11 at 22:16
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Why is my program slow when looping over exactly 8192 elements?
...matrix size, large difference in timings
But that's only because there's one other problem with the code.
Starting from the original loop:
for(i=1;i<SIZE-1;i++)
for(j=1;j<SIZE-1;j++) {
res[j][i]=0;
for(k=-1;k<2;k++)
for(l=-1;l<2;l++)
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Differences in string compare methods in C#
... below. What I am curious about are the differences between them and when one should be used over the others? Should one be avoided at all costs? Are there more I haven't listed?
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How to fix “no valid 'aps-environment' entitlement string found for application” in Xcode 4.3?
...devices is a trick to regenerate your provisioning. You need to regenerate one to use push notification, because it's linked to app id and push certicate..
– elp
Jun 19 '12 at 7:52
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