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How do I encode and decode a base64 string?
....GetBytes(text)).TrimEnd('=').Replace('+', '-')
.Replace('/', '_');
}
public static string Decode(string text)
{
text = text.Replace('_', '/').Replace('-', '+');
switch (text.Length % 4)
{
case 2:
text += "==";
...
Django filter versus get for single object?
...alled django-annoying and then do this:
from annoying.functions import get_object_or_None
obj = get_object_or_None(MyModel, id=1)
if not obj:
#omg the object was not found do some error stuff
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TypeError: ObjectId('') is not JSON serializable
...
Pymongo provides json_util - you can use that one instead to handle BSON types
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Detect if a NumPy array contains at least one non-numeric value?
... numba
import numpy as np
NAN = float("nan")
@numba.njit(nogil=True)
def _any_nans(a):
for x in a:
if np.isnan(x): return True
return False
@numba.jit
def any_nans(a):
if not a.dtype.kind=='f': return False
return _any_nans(a.flat)
array1M = np.random.rand(1000000)
assert...
What is simplest way to read a file into String? [duplicate]
...:
new String(Files.readAllBytes(Paths.get(filePath)), StandardCharsets.UTF_8);
Where filePath is a String representing the file you want to load.
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Why can't I make a vector of references?
...
Checking the assignable concept at boost.org/doc/libs/1_39_0/doc/html/Assignable.html all operations except the swap are valid on references.
– amit
Aug 18 '09 at 16:01
...
iPhone hide Navigation Bar only on first page
...
in Swift 3:
override func viewWillAppear(_ animated: Bool) {
navigationController?.navigationBar.isHidden = true
super.viewWillAppear(animated)
}
override func viewWillDisappear(_ animated: Bool) {
if (navigationController?.topViewController != self) {...
How do I find the length of an array?
... there, it won't work, right? The question is why
– A_Matar
Feb 6 '15 at 18:55
5
@A_Matar - You c...
How to sort mongodb with pymongo
...rameters.
So if you want to sort by, let's say, id then you should .sort("_id", 1)
For multiple fields:
.sort([("field1", pymongo.ASCENDING), ("field2", pymongo.DESCENDING)])
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The input is not a valid Base-64 string as it contains a non-base 64 character
...ed to a modified Base64, where the + and / characters are changed to - and _. See http://en.wikipedia.org/wiki/Base64#Implementations_and_history
If that's the case, you need to change it back:
string converted = base64String.Replace('-', '+');
converted = converted.Replace('_', '/');
...