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How do you bind an Enum to a DropDownList control in ASP.NET?
...as it inserts the name of the enumeration member in the ListItem's value. Converting to int would work in most cases, but not if the enum is a uint, ulong, or long.
– Trisped
Mar 28 '12 at 23:53
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Algorithm to detect corners of paper sheet in photo
...p with after a bit of experimentation:
import cv, cv2, numpy as np
import sys
def get_new(old):
new = np.ones(old.shape, np.uint8)
cv2.bitwise_not(new,new)
return new
if __name__ == '__main__':
orig = cv2.imread(sys.argv[1])
# these constants are carefully picked
MORPH = ...
How to use hex color values
...
Alas, like many other hex converters, this doesn't handle alpha components. So, for example, you can't get a UIColor.clear value from it.
– Womble
Jan 6 '17 at 3:27
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What is a method group in C#?
I have often encountered an error such as "cannot convert from 'method group' to 'string'" in cases like:
5 Answers
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string to string array conversion in java
I have a string = "name";
I want to convert into a string array.
How do I do it?
Is there any java built in function? Manually I can do it but I'm searching for a java built in function.
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Why are C character literals ints instead of chars?
...ode did was to put the read character into an int, then test for EOF, then convert to a char if it wasn't.
I realize this doesn't exactly answer your question, but it would make some sense for the rest of the character literals to be sizeof(int) if the EOF literal was.
int r;
char buffer[1024], *p...
Generating an MD5 checksum of a file
...t need the packed bytes use return hash_md5.digest(), so you don't have to convert back.
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Unexpected results when working with very big integers on interpreted languages
...s, integers types are used in Javascript, but all the arithmetic operators convert their operands to floating point numbers before doing anything with them (barring compiler optimizations).
– Peter Olson
Aug 5 '13 at 1:40
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How to check if a database exists in SQL Server?
...char(128)
SET @dbname = N'Senna'
IF (EXISTS (SELECT name
FROM master.dbo.sysdatabases
WHERE ('[' + name + ']' = @dbname
OR name = @dbname)))
-- code mine :)
PRINT 'db exists'
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android pick images from gallery
...ll example for request permission (if need), pick image from gallery, then convert image to bitmap or file
AndroidManifesh.xml
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
Activity
class MainActivity : AppCompatActivity() {
override fun onCreate(savedIns...