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What does ~~ (“double tilde”) do in Javascript?
...ample is:
-43.210 = 111111111111111111111111110101012
as a signed (two's complement) 32-bit binary number. (JavaScript ignores what is after the decimal point.) Inverting the bits gives:
NOT -4310 = 000000000000000000000000001010102 = 4210
Inverting again gives:
NOT 4210 = 111111111111111111111...
switch case statement error: case expressions must be constant expression
...ts are not final in a library project.
Therefore your code would no longer compile.
The solution for this is simple: Convert the switch statement into an if-else statement.
public void onClick(View src)
{
int id = src.getId();
if (id == R.id.playbtn){
checkwificonnection();
} e...
Best practices for catching and re-throwing .NET exceptions
...orrect, assuming the exception allows you to pass an exception (which is recommended).
Karl Seguin has a great write up on exception handling in his foundations of programming e-book as well, which is a great read.
Edit: Working link to Foundations of Programming pdf. Just search the text for "exc...
Iterating a JavaScript object's properties using jQuery
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How can you debug a CORS request with cURL?
...ending a regular CORS request using cUrl:
curl -H "Origin: http://example.com" --verbose \
https://www.googleapis.com/discovery/v1/apis?fields=
The -H "Origin: http://example.com" flag is the third party domain making the request. Substitute in whatever your domain is.
The --verbose flag print...
iOS (iPhone, iPad, iPodTouch) view real-time console log terminal
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CSS hide scroll bar if not needed
... You can always try to use the stackoverflow search: stackoverflow.com/questions/450903/…
– RJo
Sep 10 '13 at 10:59
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Push existing project into Github
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git init
git add .
git commit -m "Initial commit"
git remote add origin <project url>
git push -f origin master
The -f option on git push forces the push. If you don't use it, you'll see an error like this:
To git@github.com:roseperrone/pr...
Creating a JavaScript cookie on a domain and reading it across sub domains
Below is a JavaScript cookie that is written on the user's computer for 12 months.
4 Answers
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Can someone explain the dollar sign in Javascript?
...has some effects on the use of other Javascript libraries. See docs.jquery.com/Using_jQuery_with_Other_Libraries
– Thimmayya
Nov 7 '09 at 1:27
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