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In php, is 0 treated as empty?
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you should update your cheat sheet now I will give you some more... 0.0 = true, 0.00 = true, "0.0" = false
– Sayed Mohd Ali
Mar 6 '19 at 6:40
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Apache Spark: The number of cores vs. the number of executors
...son, but we still see a similar drop in performance when we lose threads.
Now for the last bit: why is it the case that we get better performance with more threads, esp. more threads than the number of CPUs?
A good explanation of the difference between parallelism (what we get by dividing up data ...
How to shrink/purge ibdata1 file in MySQL
...ou start MySQL in step 5 the ibdata1 and ib_log files will be recreated.
Now you're fit to go. When you create a new database for analysis, the tables will be located in separate ibd* files, not in ibdata1. As you usually drop the database soon after, the ibd* files will be deleted.
http://dev.m...
Tools to get a pictorial function call graph of code [closed]
...tool to visualize callgrind data.
kcachegrind callgrind.out.1234
You are now left inside an awesome GUI program that contains a lot of interesting performance data.
On the bottom right, select the "Call graph" tab. This shows an interactive call graph that correlates to performance metrics in oth...
How to print to stderr in Python?
...import the print function, every other "print" in the original script will now need to be "functionized" adding "(" and ")". So that is a slight strike against this method, IMO.
– Dan H
Nov 12 '14 at 18:38
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REST API error return good practices [closed]
... a REST API. I'm working on a new API so I can take it any direction right now. My content type is XML at the moment, but I plan to support JSON in future.
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Express next function, what is it really for?
...tes in between, but sometimes next is called without arguments. Anybody knows of a good tutorial etc that describes the next function?
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PHP-FPM doesn't write to error log
...!! This was the key for me. I ended up symlinking the two files because I know I'm not going to remember this later: ln -sf /var/log/upstart/php5-fpm.log /var/log/php5-fpm.log
– njbair
Feb 15 '15 at 23:15
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Replacing H1 text with a logo image: best method for SEO and accessibility?
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Unfortunately the link in the comment left by @troynt is now broken. Here's a new permalink to the content: youtu.be/fBLvn_WkDJ4
– ahsteele
Mar 4 '13 at 18:46
10
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How to test chrome extensions?
...ert.calledWithMatch(chrome.browserAction.setBadgeText, {
text: "2"
});
Now we can wrap it into mocha's describe..it functions and run from terminal:
$ mocha
background page
✓ should display opened tabs count in button badge
1 passing (98ms)
You can find full example here.
Additionally,...