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Groovy: what's the purpose of “def” in “def x = 0”?
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Ted's answer is excellent for scripts; Ben's answer is standard for classes.
As Ben says, think of it as "Object" -- but it is much cooler in that it does not constrain you to the Object methods. This has neat implications with respect to ...
Django: How to completely uninstall a Django app?
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Excellent answer, just one addition that I'd make: pip uninstall package-name is your friend, much nicer than trawling around your PYTHONPATH.
– DaveJ
Jul 26 '10 at 12:23
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Why can't I forward-declare a class in a namespace using double colons?
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There's a lot of excellent answers about the rationale involved in disallowing it. I just want to provide the boring standardese clause the specifically prohibits it. This holds true for C++17 (n4659).
The paragraph in question is [class.nam...
PDO's query vs execute
...only one function instead of two. The parameter binding operation provides excellent protection, but it might be expensive and possibly avoided if unnecessary.
Given a couple rare conditions:
If you can't reuse a prepared statement because it's not supported by the Microsoft ODBC driver.
If you'r...
Best ways to teach a beginner to program? [closed]
...rate loops, variables, functions, conditionals, etc. This page provides an excellent tutorial.
After Logo, move to Python or Ruby. I recommend Python, as it's based on ABC, which was invented for the purpose of teaching programming.
When teaching programming, I must second EHaskins's suggestion ...
How does a Java HashMap handle different objects with the same hash code?
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You can find excellent information at http://javarevisited.blogspot.com/2011/02/how-hashmap-works-in-java.html
To Summarize:
HashMap works on the principle of hashing
put(key, value): HashMap stores both key and value object as Map.En...
Is there a generator version of `string.split()` in Python?
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Excellent! I had forgotten about finditer. If one were interested in doing something like splitlines, I would suggest using this RE: '(.*\n|.+$)' str.splitlines chops off the trainling newline though (something that I don't r...
Simultaneously merge multiple data.frames in a list
...the ... argument
reshape::merge_all(list_of_dataframes, ...)
Here is an excellent resource on different methods to merge data frames.
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MySQL 'create schema' and 'create database' - Is there any difference
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Excellent! I assumed schema is a part of a Database instance. Thanks very much!!
– asgs
Jan 1 '16 at 19:26
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Detect 7 inch and 10 inch tablet programmatically
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Excellent tips Sean. I used to check with px for tablets, but in some cases there are problems (Galaxy 3, 4, Note, has equal or more px than Nexus 7). Now I can also check for inch. Here is a list of many popular devices scre...