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How to change the CHARACTER SET (and COLLATION) throughout a database?
...tf8mb4_0900_ai_ci;
change table collation:
ALTER TABLE <table_name> CONVERT TO CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change column collation:
ALTER TABLE <table_name> MODIFY <column_name> VARCHAR(255) CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
What do the parts of ...
Format number to 2 decimal places
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@UncleIroh, No I think he actuallyy means convert(2229.999 as decimal(4,2)).
– Pacerier
Apr 28 '15 at 6:58
3
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Using StringWriter for XML Serialization
...on must match the actual encoding of the bytes.
The 8-bit encoding will be converted into UTF-16 LE by the XML datatype
With the points outlined above in mind, and given that strings in .NET are always UTF-16 LE / UCS-2 LE (there is no difference between those in terms of encoding), we can answer...
How do you remove duplicates from a list whilst preserving order?
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Converting to some custom kind of dict just to take keys? Just another crutch.
– Nakilon
Jun 14 '13 at 13:40
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List comprehension on a nested list?
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Here is how to convert nested for loop to nested list comprehension:
Here is how nested list comprehension works:
l a b c d e f
↓ ↓ ↓ ↓ ↓ ↓ ↓
In [1]: l = [ [ [ [ [ [ 1 ] ] ] ] ] ]
In [2]: for a in l...
Create list of single item repeated N times
...t that can be used to create a list if you wish! Let's try that again, but converting to a list:
>>> timeit.timeit('list(itertools.repeat(0, 10))', 'import itertools', number = 1000000)
1.7508119747063233
So if you want a list, use [e] * n. If you want to generate the elements lazily, us...
How to change a django QueryDict to Python Dict?
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This is what I've ended up using:
def qdict_to_dict(qdict):
"""Convert a Django QueryDict to a Python dict.
Single-value fields are put in directly, and for multi-value fields, a list
of all values is stored at the field's key.
"""
return {k: v[0] if len(v) == 1 else v ...
TypeError: ObjectId('') is not JSON serializable
...y.
But this question shows that we can serialize using json_util.dumps(), convert back to dict using json.loads() and finally call Flask's jsonify on it.
Example (derived from previous question's answer):
from bson import json_util, ObjectId
import json
#Lets create some dummy document to prove...
Match linebreaks - \n or \r\n?
...ex seems to have identified which line ending style you used first, and it converts all additional line endings entered to that style.
I used Notepad++ to paste sample text in Unix and Windows format into Debuggex, and whichever I pasted first is what that session of Debuggex stuck with.
So, you s...
Specifying a custom DateTime format when serializing with Json.Net
...t modify the global settings, then the next best thing is to apply the JsonConverter attribute on an as-needed basis, as you suggested. It turns out Json.Net already has a built-in IsoDateTimeConverter that lets you specify the date format. Unfortunately, you can't set the format via the JsonConve...