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Tactics for using PHP in a high-load site
...s that aren't indexed which run parallel to your columns that are indexed. Then you can have an offline process that writes the non-indexed columns over the indexed columns in batches. This way, you can control better when mySQL will need to recompute the index.
Avoid computed queries like a plague...
How does a debugger work?
...table. I understand that compiler translates code to machine language, but then how does debugger 'know' what it is being attached to?
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Check to see if python script is running
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Drop a pidfile somewhere (e.g. /tmp). Then you can check to see if the process is running by checking to see if the PID in the file exists. Don't forget to delete the file when you shut down cleanly, and check for it when you start up.
#/usr/bin/env python
impo...
In what order are Panels the most efficient in terms of render time and performance?
...ommodate stretching using alignments (or Auto in the case of the Grid) and then the number of children which are stretched or auto-sized. The performance of the Arrange pass is affected by the complexity of the interaction between layout location of different children and then of course the number ...
How to grant permission to users for a directory using command line in Windows?
... the user group named "Users" (which, on Windows 7, is normally the case), then granting a permission to that group will affect the access rights of the current user. In any other case, replace the name Users with the actual name of the current user (e.g. John), thus: /grant John:(OI)(CI)F
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What's the use of ob_start() in php?
...s are buffered and not sent to the browser? Am I making sense here? If not then why should we use ob_start() ?
9 Answers
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What's the difference between ES6 Map and WeakMap?
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Then why iteration for WeekMap keys are not supported?
– Mohan Ram
May 17 '18 at 12:42
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Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
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Matt J's lookup bitflipping 400 000 000 bytes: Around 0.272 seconds.
I then went ahead and tried to see if Intel's ISPC compiler could vectorise the arithmetics in the reverse.c.
I'm not going to bore you with my findings here since I tried a lot to help the compiler find stuff, anyhow I ended ...
What is the optimal length for user password salt? [closed]
...ed in a hash table attack. For instance, if your salt is just the userID, then a plain alpha hash table that's long enough will include not just all passwords, but all username + password combinations.
– Richard Gadsden
Jul 7 '11 at 15:10
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Handling file renames in git
...ming files in git , you should commit any changes, perform your rename and then stage your renamed file. Git will recognise the file from the contents, rather than seeing it as a new untracked file, and keep the change history.
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