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Get unique values from a list in python [duplicate]
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NOTE: Have in mind that more human-readable we get, more unperformant the script is.
import timeit
setup = "mylist = [u'nowplaying', u'PBS', u'PBS', u'nowplaying', u'job', u'debate', u'thenandnow']"
#10x to Michael for pointing out that we can get faster with set()
timeit.timeit('[x for x in myl...
JOIN queries vs multiple queries
...ponential memory leak issue. Grab all of the data, then use a server-side scripting language to sort it out:
SELECT * FROM Address WHERE Personid IN(1,2,3);
Results:
Address.id : 1 // First person and their address
Address.Personid : 1
Address.City : "Boston"
Address.id : 2 ...
What does JVM flag CMSClassUnloadingEnabled actually do?
...anguages like Groovy, that define classes at runtime. Every time you run a script, one (or more) new classes are created and they stay in PermGen forever. If you're running a server, that means you have a memory leak.
If you enable CMSClassUnloadingEnabled the GC will sweep PermGen, too, and remove...
Django connection to PostgreSQL: “Peer authentication failed”
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That is probably because your script is running under some other user than the one you are trying to connect with (myuser here). In this case, peer authentication will fail. Your solution with HOST: "localhost" works because you are not using peer auth an...
How to concatenate two MP4 files using FFmpeg?
...s/"P"/" file P"/g > mylist.txt which is even cooler than coding a batch script. Anyway, -c copy performs very quickly (which I was not aware of) and this is the real magic of this answer.
– Würgspaß
Oct 11 '18 at 18:17
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Do python projects need a MANIFEST.in, and what should be in it?
...ll the files you feel important for the program to run (modules, packages, scripts ...)
Clarify, if there are some files to add or some files to exclude. If neither is needed, then there is no need for using MANIFEST.in.
If MANIFEST.in is needed, create it. Usually, you add there tests*/*.py files, ...
CSS selector for a checked radio button's label
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Yes... it is of course possible to do this via javascript (frameworks), but it is not as simple as it seems. What happens if something else has already checked the box? What script will remove this class if another radio in the same group is selected? It gets too complicate...
HTML5shiv vs Dean Edwards IE7-js vs Modernizr - which to choose?
...tags in IE, like html5shiv.
ie7.js (as well as ie8.js and ie9.js) uses Javascript to retro-fit some missing functionality to IE.
As far as I'm aware there's no cross-over between them (aside from html5shiv/modernizr), so you can use any combination of them, depending on what features you need to i...
how to split the ng-repeat data with three columns using bootstrap
... we can create this filter very simply using npm modules and compiling the script with browserify or webpack.
Remember: display only! Filter in the controller if you're using inputs!
Install lodash:
npm install lodash-node
Create the filter:
var chunk = require('lodash-node/modern/array/chunk'...
Modify file in place (same dest) using Gulp.js and a globbing pattern
...emaps.write('./'))
.pipe(gulp.dest("."));
});
//scripts
gulp.watch([srcPath + '.js','!'+ srcPath + 'min.js']).on("change", function(file) {
console.log("Compiling JS File: " + file.path)
gulp.src(file.path, { base: "./" })
.pipe(uglify())
...