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Why aren't variables declared in “try” in scope in “catch” or “finally”?
...ges as well), variables declared in a "try" block are not in scope in the corresponding "catch" or "finally" blocks. For example, the following code does not compile:
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How to Pass Parameters to Activator.CreateInstance()
... generic method that I have. This type has a number of overloaded constructors. I'd like to be able to pass arguments to the constructors, but
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Node.js setting up environment specific configs to be used with everyauth
...p.js
Then setup config.js as a function rather than an object
module.exports = function(){
switch(process.env.NODE_ENV){
case 'development':
return {dev setting};
case 'production':
return {prod settings};
default:
return {error or...
What is the !! (not not) operator in JavaScript?
I saw some code that seems to use an operator I don't recognize, in the form of two exclamation points, like so: !! . Can someone please tell me what this operator does?
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Convert UTC/GMT time to local time
We are developing a C# application for a web-service client. This will run on Windows XP PC's.
11 Answers
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What does the 'standalone' directive mean in XML?
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The standalone declaration is a way of telling the parser to ignore any markup declarations in the DTD. The DTD is thereafter used for validation only.
As an example, consider the humble <img> tag. If you look at the XHTML 1.0 DTD, you see a markup declaration telling the parser th...
What's the purpose of using braces (i.e. {}) for a single-line if or loop?
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Let's attempt to also modify i when we increment j:
int j = 0;
for (int i = 0 ; i < 100 ; ++i)
if (i % 2 == 0)
j++;
i++;
Oh no! Coming from Python, this looks ok, but in fact it isn't, as it's equivalent to:
int j = 0;
for (int i = 0 ; i < 100 ; ++i)
if (i...
Why doesn't java.lang.Number implement Comparable? [duplicate]
....lang.Number does not implement Comparable ? This means that you cannot sort Number s with Collections.sort which seems to me a little strange.
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_DEBUG vs NDEBUG
Which preprocessor define should be used to specify debug sections of code?
6 Answers
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Set every cell in matrix to 0 if that row or column contains a 0
...the beginning depend on squares in the end. Maybe my 2nd pass can be made more efficient...
import pprint
m = [[1, 0, 1, 1, 0],
[0, 1, 1, 1, 0],
[1, 1, 1, 1, 1],
[1, 0, 1, 1, 1],
[1, 1, 1, 1, 1]]
N = len(m)
### pass 1
# 1 rst line/column
c = 1
for i in range(N):
c &...