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Remap values in pandas column with a dict
...E", 6: "F", 7: "G", 8: "H" }
df = pd.DataFrame({ 'col1': np.random.choice( range(1,9), 100000 ) })
and testing with %timeit, it appears that map is approximately 10x faster than replace.
Note that your speedup with map will vary with your data. The largest speedup appears to be with large dict...
How can I do test setup using the testing package in Go
...stCase := setupTestCase(t)
defer teardownTestCase(t)
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
teardownSubTest := setupSubTest(t)
defer teardownSubTest(t)
result := Sum(tc.a, tc.b)
if result != tc.expected {
...
“Server” vs “Data Source” in connection string
...
I've been googlearching for the reason for the range of equivalent keywords in the connection strings. This far, I haven't found a good explanation. I'm assuming it's due to historial reasons and users from different "worlds" coming together. Is there another reason?
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Is there a zip-like function that pads to longest length in Python?
...:
yield None
gens = [g(l) for l in lists]
for _ in range(max(map(len, lists))):
yield tuple(next(g) for g in gens)
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stash@{1} is ambiguous?
...n be configured either way, bash only expands curly brackets with comma or range between them, other shells may behave one or other way).
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What size should TabBar images be?
...ced that I said "about 25", so I would consider 23 to be inside that about range.
– rsc
Dec 16 '17 at 18:29
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Python - Passing a function into another function
...;> looper(foo, 3, 2, b=4)
6
6
6
"""
for i in range(n):
fn(*args, **kwargs)
Depending on what you are doing, it could make sense to define a decorator, or perhaps use functools.partial.
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Using [UIColor colorWithRed:green:blue:alpha:] doesn't work with UITableView seperatorColor?
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You have to divide your values with 255, because the range is 0-1. Take 127/255 = 0.49f and type in that instead. It's there, it's just white :)
edit: cause of comments, I added some code as to how I solve it:
-(float)getRGBValue:(int) rgbValue{
return rgbValue/255.0;...
How to round a number to n decimal places in Java
...s 265.335 += tolerance, where tolerance depends on previous operations and range of input values. We do not know the true, exact value. At the edge values, either answer is arguably correct. If we need to be exact, we shouldn't work in double. The fail here isn't in converting back to double. Its in...
C#: Looping through lines of multiline string
...nce of TextReader to open a text file " +
"for reading a specified range of characters, or to " +
"create a reader based on an existing stream.\n\n" +
"You can also use an instance of TextReader to read " +
"text from a custom backing store using the same " +
...