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How to make lists contain only distinct element in Python? [duplicate]
...t(set(my_list))
One disadvantage with this is that it won't preserve the order. You may also want to consider if a set would be a better data structure to use in the first place, instead of a list.
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MySQL, update multiple tables with one query
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Take the case of two tables, Books and Orders. In case, we increase the number of books in a particular order with Order.ID = 1002 in Orders table then we also need to reduce that the total number of books available in our stock by the same number in Books table.
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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
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There are multiple reasons why the C compiler cannot automatically reorder the fields:
The C compiler doesn't know whether the struct represents the memory structure of objects beyond the current compilation unit (for example: a foreign library, a file on disc, network data, CPU page tables,...
How do I fix “for loop initial declaration used outside C99 mode” GCC error?
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gcc -std=c99 foo.c -o foo
REF: http://cplusplus.syntaxerrors.info/index.php?title='for'_loop_initial_declaration_used_outside_C99_mode
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boost::flat_map and its performance compared to map and unordered_map
...of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able to find any performance comparisons. How does it compare and what are the best use cases for it?
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What is the Sign Off feature in Git for?
...n-source project.
If branch maintainer need to slightly modify patches in order to merge them, he could ask the submitter to rediff, but it would be counter-productive.
He can adjust the code and put his sign-off at the end so the original author still gets credit for the patch.
Add tests for the...
How to convert a SVG to a PNG with ImageMagick?
...esize x200 for height. See: imagemagick.org/script/command-line-processing.php#geometry for exhaustive ImageMagick geometry options.
– John
Jan 11 '15 at 22:45
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How to run a shell script on a Unix console or Mac terminal?
...er from the same folder, still using #!hashbang in scripts.
As example a php7.2 executable copied from /usr/bin is in a folder along a hello script.
#!./php7.2
<?php
echo "Hello!";
To run it:
./hello
Which behave just as equal as:
./php7.2 hello
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jquery-ui sortable | How to get it work on iPad/touchdevices?
...on (only tested with iPad until now!)!
http://touchpunch.furf.com/content.php?/sortable/default-functionality
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Submitting HTML form using Jquery AJAX
...PDATING/UPSERTING DATA, and DELETING DATA. A default HTML/ASP.Net webform/PHP/Python or any other form action is to "submit" which is a POST action. Because of this the below will all describe doing a POST. Sometimes however with http you might want a different action and would likely want to uti...