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Android; Check if file exists without creating a new one
I want to check if file exists in my package folder, but I don't want to create a new one.
7 Answers
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Why `null >= 0 && null
I had to write a routine that increments the value of a variable by 1 if its type is number and assigns 0 to the variable if not, where the variable is initially null or undefined .
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Django - what is the difference between render(), render_to_response() and direct_to_template()?
...and) in a view between render() , render_to_response() and direct_to_template() ?
5 Answers
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Chrome Dev Tools - Modify javascript and reload
Is it possible to modify the JavaScript of a page and then reload the page without reloading the modified JavaScript file (and thus losing modifications)?
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How to use Swift @autoclosure
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Consider a function that takes one argument, a simple closure that takes no argument:
func f(pred: () -> Bool) {
if pred() {
print("It's true")
}
}
To call this function, we have to pass in a closure
f(pred: {2 > 1})
// "It's true"
If w...
How to get controls in WPF to fill available space?
Some WPF controls (like the Button ) seem to happily consume all the available space in its' container if you don't specify the height it is to have.
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How to find out the number of CPUs using python
I want to know the number of CPUs on the local machine using Python. The result should be user/real as output by time(1) when called with an optimally scaling userspace-only program.
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Why is HttpClient BaseAddress not working?
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It turns out that, out of the four possible permutations of including or excluding trailing or leading forward slashes on the BaseAddress and the relative URI passed to the GetAsync method -- or whichever other method of HttpClient -- only one permutation works. You must...
Rails params explained?
Could anyone explain params in Rails controller: where they come from, and what they are referencing?
5 Answers
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How can javascript upload a blob?
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Try this
var fd = new FormData();
fd.append('fname', 'test.wav');
fd.append('data', soundBlob);
$.ajax({
type: 'POST',
url: '/upload.php',
data: fd,
processData: false,
contentType: false
}).done(function(data) {
console.lo...