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How to remove the left part of a string?
...requires section headers to be present
path = config.get(section, 'path', raw=1) # case-insensitive, no interpolation
Other options
str.split()
re.match()
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ActiveRecord.find(array_of_ids), preserving order
When you do Something.find(array_of_ids) in Rails, the order of the resulting array does not depend on the order of array_of_ids .
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Read an Excel file directly from a R script
... on MacOS and Linux, but takes an extra step on Windows, i.e. see http://strawberryperl.com/). There are various caveats, and alternatives, listed on the R wiki page.
The only reason I see not to do this directly is that you may want to examine the spreadsheet to see if it has glitches (weird heade...
How to know/change current directory in Python shell?
...tever, you need to double up backslashes if you use them in a regular (non-raw) Python string. Python also lets you use forward slashes instead. Thus, either os.chdir('C:/Users/Ajeya/Documents'), or os.chdir('C:\\Users\\Ajeya\\Documents'), or os.chdir(r'C:\Users\Ajeya\Documents').
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Deleting all pending tasks in celery / rabbitmq
How can I delete all pending tasks without knowing the task_id for each task?
9 Answers
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Warning “Do not Access Superglobal $_POST Array Directly” on Netbeans 7.4 for PHP
... use of a filter function without a filter argument leads to FILTER_UNSAFE_RAW, which is equivalent to TRUST_ALL_BAD_INPUT
– Kzqai
Nov 30 '15 at 16:32
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...ack memory with 0xCC. It also inserts a space between every stack frame in order to detect buffer overflows. A very simple example of where this is useful is here (in practice Visual Studio would spot this problem and issue a warning):
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bool error; // uninitialised value
if(something)
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PostgreSQL DISTINCT ON with different ORDER BY
...equal. [...] Note that the "first row" of each set is unpredictable unless ORDER BY is used to ensure that the desired row appears first. [...] The DISTINCT ON expression(s) must match the leftmost ORDER BY expression(s).
Official documentation
So you'll have to add the address_id to the order by...
How to do URL decoding in Java?
...g (such as UTF-8 or ASCII) is what determines the mapping of characters to raw bytes. For a good intro to character encodings, see this article.
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