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Releasing memory in Python
...eceiving large amounts of data, you'll want to use some other mechanism (a file, mmapped or otherwise; the shared-memory APIs in multiprocessing; etc.).
Sending large amounts of data between processes means the data have to be pickleable (or, if you stick them in a file or shared memory, struct-able...
Django auto_now and auto_now_add
...quires fiddling directly with your db while Django aims for only models.py files to define the schema
– akaihola
Feb 16 '11 at 12:31
17
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Animate change of view background color on Android
...ou can use a TransitionDrawable to accomplish this. For example, in an XML file in the drawable folder you could write something like:
<?xml version="1.0" encoding="UTF-8"?>
<transition xmlns:android="http://schemas.android.com/apk/res/android">
<!-- The drawables used here can b...
Suppress properties with null value on ASP.NET Web API
...
I ended up with this piece of code in the startup.cs file using ASP.NET5 1.0.0-beta7
services.AddMvc().AddJsonOptions(options =>
{
options.SerializerSettings.NullValueHandling = NullValueHandling.Ignore;
});
...
Using python's eval() vs. ast.literal_eval()?
...aluated is "os.system('rm -rf /')" ? It will really start deleting all the files on your computer.
ast.literal_eval:
Safely evaluate an expression node or a string containing a Python literal or container display. The string or node provided may only consist of the following Python literal structure...
How can I produce an effect similar to the iOS 7 blur view?
...ything like that, or bad things will happen. He also strongly suggested to file Radar bug reports on this, to build a case internally so we can get a real public API for this effect!
– smileyborg
Oct 10 '13 at 7:51
...
Differences between utf8 and latin1
...isn't an encoding. It's usually an option that you can give when reading a file, telling the IO functions to not apply any encoding, but instead just read the file byte by byte.
– sepp2k
May 17 '17 at 11:38
...
Optimise PostgreSQL for fast testing
... you can see sorts spilling to disk in EXPLAIN or logged with the log_temp_files setting (recommended), but a higher value may also let Pg pick smarter plans.
As said by another poster here it's wise to put the xlog and the main tables/indexes on separate HDDs if possible. Separate partitions is pr...
Squash the first two commits in Git? [duplicate]
... first commit. This even avoids to "pollute" the commit with a .gitignore file. Please note that some older tools had trouble viewing empty trees like this.
– Tino
Mar 11 '17 at 8:24
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How to check iOS version?
...
I just tested putting this in my .pch file and it works great (building with Xcode 5 at least)
– whyoz
Oct 15 '13 at 1:16
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