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How do I make a placeholder for a 'select' box?
...abled option as the default selection (placeholder). It shows the next one by default, in this case "Durr".
– jarnoan
Feb 27 '12 at 12:12
53
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Try-catch speeding up my code?
...he try/catch around just the n++; line still improves performance, but not by as much as putting it around the whole block
If you catch a specific exception (ArgumentException in my tests) it's still fast
If you print the exception in the catch block it's still fast
If you rethrow the exception in t...
A generic error occurred in GDI+, JPEG Image to MemoryStream
...
OK I seem to have found the cause just by sheer luck and its nothing wrong with that particular method, it's further back up the call stack.
Earlier I resize the image and as part of that method I return the resized object as follows. I have inserted two calls to...
Fastest way to check a string contain another substring in JavaScript?
...n before hand (i.e. not stored in a variable) because the regex is created by the JavaScript engine during parse time. If you want to search for a string contained in a variable inside another string variable, indexOf is the fastest because you'd need to create a RegExp object and process the string...
C# operator overload for `+=`?
... And how do you want me to answer why it is not possible? It is impossible by design, what else can I say?
– VMAtm
Jul 6 '11 at 16:47
2
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Generate array of all letters and digits
Using ruby, is it possible to make an array of each letter in the alphabet and 0-9 easily?
7 Answers
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Is there a method to generate a UUID with go language
...0x40) & 0x4F // what's the purpose ?
These lines clamp the values of byte 6 and 8 to a specific range. rand.Read returns random bytes in the range 0-255, which are not all valid values for a UUID. As far as I can tell, this should be done for all the values in the slice though.
If you are on ...
Database Structure for Tree Data Structure
... to me.
You can then use a common table expression in SQL or the connect by prior statement in Oracle to build your tree.
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Capture keyboardinterrupt in Python without try-except
... capable and readable out of the box, for example:
import atexit
def goodbye():
print "You are now leaving the Python sector."
atexit.register(goodbye)
You can also use it as a decorator (as of 2.6; this example is from the docs):
import atexit
@atexit.register
def goodbye():
print "Y...
How to change node.js's console font color?
...DIT:
For example, \x1b[31m is an escape sequence that will be intercepted by your terminal and instructs it to switch to the red color. In fact, \x1b is the code for the non-printable control character escape. Escape sequences dealing only with colors and styles are also known as ANSI escape code a...