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How to safely open/close files in python 2.4
...ry-finally blocks:
>>> with open('workfile', 'r') as f:
... read_data = f.read()
>>> f.closed
True
More here: https://docs.python.org/2/tutorial/inputoutput.html#methods-of-file-objects
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Difference between GeoJSON and TopoJSON
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And even though I did remember reading about "shared line segments", I still assumed "topo" stood for "topography", which it does not. Here's a nice read about the difference between "topology" and "topography" (the former is the origin of "topo" in topojs...
SAML vs federated login with OAuth
... has been established, and now your app can act as you on Twitter. It can read your posts, as well as make new ones.
SAML - For SAML think of some type of "agreement" between two unrelated membership systems. In our case we can use US Airways and Hertz. There is no shared set of credentials that...
How is the Linux kernel tested ?
... but only reported via /sys/kernel/debug/kmemleak.
Kmemcheck traps every read and write to memory that was allocated dynamically (i.e. with kmalloc()). If a memory address is read that has not previously been written to, a message is printed to the kernel log. Also is a part of Linux Kernel
Fault...
Difference between JOIN and INNER JOIN
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They are functionally equivalent, but INNER JOIN can be a bit clearer to read, especially if the query has other join types (i.e. LEFT or RIGHT or CROSS) included in it.
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Git - How to fix “corrupted” interactive rebase?
...to file, so I created that file. Then I got another error saying could not read '.git/rebase-apply/onto': No such file or directory.
So I looked at the git documentation for rebasing and found another command:
git rebase --quit
This set me back on my branch with no changes, and I could start my ...
getResourceAsStream returns null
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I've already done all three of these things. Please reread my question.
– user1131435
May 15 '13 at 16:51
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How do I analyze a .hprof file?
...ift thru a 400mb+ heap dump file, and it took jhat more than 70 minutes to read the file, before it caused a complete JVM crash. EMA is able to open it up in < 5 minutes.
– matt b
Jun 18 '09 at 18:37
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What is the most efficient/elegant way to parse a flat table into a tree?
...lution is called Nested Sets, and it can be stored in the same table too. Read "Trees and Hierarchies in SQL for Smarties" by Joe Celko for a lot more information on these designs.
I usually prefer a design called Closure Table (aka "Adjacency Relation") for storing tree-structured data. It requi...
How to make child process die after parent exits?
... This is a poor solution because the parent might have died already. Race condition. Correct solution: stackoverflow.com/a/17589555/412080
– Maxim Egorushkin
Dec 22 '15 at 17:49
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