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What's the difference between utf8_general_ci and utf8_unicode_ci?
...eneral_ci and utf8_unicode_ci , are there any differences in terms of performance?
8 Answers
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How do I create a variable number of variables?
...t; x = "spam"
>>> z = {x: "eggs"}
>>> z["spam"]
'eggs'
For cases where you're thinking of doing something like
var1 = 'foo'
var2 = 'bar'
var3 = 'baz'
...
a list may be more appropriate than a dict. A list represents an ordered sequence of objects, with integer indices:
lst = ...
How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...ine
visualvm_jdkhome="`/usr/libexec/java_home -v '1.7*'`"
and this will force it to choose Java 7 instead of 8.
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How to list all installed packages and their versions in Python?
...u can simply call this:
pip freeze
It will also include version numbers for the installed packages.
Update
pip has been updated to also produce the same output as pip freeze by calling:
pip list
Note
The output from pip list is formatted differently, so if you have some shell script that pa...
Structure padding and packing
...- say, int members would have offsets, which are mod(4) == 0 on 32-bit platform. Padding is on by default. It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
char c;
char gap...
How to find list intersection?
...arPal intersection is commonly understood to be set based. You are looking for a slightly different animal - and you may need to do that manually by sorting each list and merging the results - and keeping dups in the merging.
– javadba
Jan 6 '19 at 18:51
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Django Rest Framework: Dynamically return subset of fields
As recommended in the blogpost Best Practices for Designing a Pragmatic RESTful API , I would like to add a fields query parameter to a Django Rest Framework based API which enables the user to select only a subset of fields per resource.
...
How to calculate the difference between two dates using PHP?
I have two dates of the form:
33 Answers
33
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How to find out if an installed Eclipse is 32 or 64 bit version?
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If you can't open Eclipse search alternate answers below for eclipse.ini
– Leo
Jan 21 '13 at 15:52
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What's the cleanest way of applying map() to a dictionary in Swift?
...lue in (key.uppercased(), value.lowercased()) })
There are also new APIs for merging dictionaries together, substituting a default value for missing elements, grouping values (converting a collection into a dictionary of arrays, keyed by the result of mapping the collection over some function), an...