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Items in JSON object are out of order using “json.dumps”?
... Note that JSON objects are unordered still; a JSON client can read the object definition and completely ignore the order of the keys and be fully RFC compliant.
– Martijn Pieters♦
Aug 7 '13 at 14:46
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How can I echo a newline in a batch file?
...r - there are examples of failure for each of those suggestions. Carefully read dostips.com/forum/viewtopic.php?p=4554#p4554.
– dbenham
Jul 29 '15 at 12:23
3
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How do I enable/disable log levels in Android?
...ARN
Later versions of Android appear to require that /data/local.prop be read only. This file is read at boot time so you'll need to restart after updating it. If /data/local.prop is world writable, it will likely be ignored.
Finally, you can set them programmatically using the System.setProper...
How do you beta test an iphone app?
...ertificate From a Certificate Authority...
The dialog that pops up should aready have your email and name it it.
Select the radio button Saved to disk and Continue.
Save the file to disk.
Go back to the Provisioning Portal.
Go to the section Certificates.
Go to the tab Distribution.
Click the button...
Get current directory name (without full path) in a Bash script
...ell input
# ...useful to make hidden characters readable.
Note that if you're applying this technique in other circumstances (not PWD, but some other variable holding a directory name), you might need to trim any trailing slashes. The below uses bash's extglob support ...
Python memoising/deferred lookup property decorator
...be deferred, ie. not be initialised in the constructor but only upon first read. These attributes do not change over the lifetime of the instance, but they're a real bottleneck to calculate that first time and only really accessed for special cases. Hence they can also be cached after they've been r...
How to ignore certain files in Git
...ly make my point more clear, the index initially (that is, right after git read-tree) "contains" all the files from the tree-ish which had just been read in. Hence making Git "turn a blind eye" to an index entry does not equal actually removing it.
– Xman Classical
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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...you have everything in memory, and the results come spilling out.
From my reading of the docs, iterator() does nothing more than bypass QuerySet's internal caching mechanisms. I think it might make sense for it to a do a one-by-one thing, but that would conversely require ten-million individual hi...
Explanation of BASE terminology
...
The CAP "theorem" is dissected mathematically (but very readably) and discussed in a uniquely intelligent way by Mark Burgess, whose article I'm in progress reading. (I was linked there in the first place by Wikipedia.)
– Wildcard
Mar 28 '16...
write a shell script to ssh to a remote machine and execute commands
...currently:
pssh -i -h hosts.txt -p 100 -t 0 sleep 10000
Options:
-I: Read input and sends to each ssh process.
-P: Tells pssh to display output as it arrives.
-h: Reads the host's file.
-H : [user@]host[:port] for single-host.
-i: Display standard output and standard error as each host...