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Why “decimal” is not a valid attribute parameter type?
...g types: bool, byte, char, double, float, int, long, sbyte, short, string, uint, ulong, ushort.
The type object.
The type System.Type.
An enum type, provided it has public accessibility and the types in which it is nested (if any) also have public accessibility (Attribute specification).
...
Fastest way to check if string contains only digits
... null || s == "") return false; for (int i = 0; i < s.Length; i++) if ((uint)(s[i] - '0') > 9) return false; return true; }
static bool isDigitsFx(string s) { if (s == null || s == "") return false; for (int i = 0; i < s.Length; i++) if ((s[i] ^ '0') > 9) return false; return true; }
sta...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
... $4, %rsi
cmpq $400000000, %rsi
jne .L3
EDIT: I also tried using uint64_t types on my machine to see if there was any performance boost. Performance was about 10% faster than 32-bit, and was nearly identical whether you were just using 64-bit types to reverse bits on two 32-bit int types ...
Node.js throws “btoa is not defined” error
...op Chrome would return "fvXmvA=="
btoa(String.fromCharCode.apply(null, new Uint8Array([0x7e, 0xf5, 0xe6, 0xbc])));
As it turns out, Buffer instances represent/interpret strings encoded in UTF-8 by default. By contrast, in desktop Chrome, you can't even input a string that contains characters outsi...
how to check the dtype of a column in python pandas
... treat_numeric(agg[y])
else:
treat_str(agg[y])
Note:
uint and UInt are of kind u, not kind i.
Consider the dtype introspection utility functions, e.g. pd.api.types.is_integer_dtype.
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...
A generic error occurred in GDI+, JPEG Image to MemoryStream
...You can verify this yourself with test:
int width = 480;
var height = UInt16.MaxValue - 36; //succeeds at 65499, 65500
try
{
while(true)
{
var image = new Bitmap(width, height);
using(MemoryStream ms = new MemoryStream())
{
//error will throw from here
...
What is a bus error?
...er math and then typecast for access to a problem mode (i.e. You set up an uint8_t array, add one, two, or three to the array's pointer and then typecast to a short, int, or long and try to access the offending result.) X86 systems will pretty much let you do this, albeit at a real performance pena...
Assign pandas dataframe column dtypes
...t pandas as pd
import numpy as np
x = np.empty((10,), dtype=[('x', np.uint8), ('y', np.float64)])
df = pd.DataFrame(x)
df.dtypes ->
x uint8
y float64
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Is floating-point math consistent in C#? Can it be?
...ta type such as int, long, and BigInteger, and the non-CLS-compliant types uint and ulong.
As suggested in another answer, you can use lookup tables, where each element in the table is a binary fixed point number, to help implement complex functions such as sine, cosine, square root, and so on. If...
Convert blob to base64
...n bufferToBinaryString(arrayBuffer){
return String.fromCharCode(...new Uint8Array(arrayBuffer));
}
(async () => console.log(btoa(bufferToBinaryString(await new Response(blob).arrayBuffer()))))();
or
function bufferToBinaryString(arrayBuffer){
return String.fromCharCode(...new Uint8Arra...