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What causes javac to issue the “uses unchecked or unsafe operations” warning
...ections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-safe way, using generics.
To get rid of the warning, just be specific about what type of objects you're storing in the collect...
How do you serve a file for download with AngularJS or Javascript?
...|ftp|mailto|tel|file|blob):/);
}]);
Please note that
Each time you call createObjectURL(), a new object URL is created, even if you've already created one for the same object. Each of these must be released by calling URL.revokeObjectURL() when you no longer need them. Browsers will release t...
Convert String to equivalent Enum value
Is it possible for me to convert a String to an equivalent value in an Enumeration , using Java.
4 Answers
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What format string do I use for milliseconds in date strings on iPhone?
I'm required to parse strings in a format that includes milliseconds. What format string do I use to get the right date value?
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How to get just the parent directory name of a specific file
...
Use File's getParentFile() method and String.lastIndexOf() to retrieve just the immediate parent directory.
Mark's comment is a better solution thanlastIndexOf():
file.getParentFile().getName();
These solutions only works if the file has a parent file (e.g.,...
How can I use UIColorFromRGB in Swift?
...
If you're starting from a string (not hex) this is a function that takes a hex string and returns a UIColor.
(You can enter hex strings with either format: #ffffff or ffffff)
Usage:
var color1 = hexStringToUIColor("#d3d3d3")
Swift 4:
func hexStri...
Reactive Extensions bug on Windows Phone
...r is creating a connection to the compiler, and the debugger as well needs all vars to be strictly typed. The debugger is guessing correct, and the compiler is somehow taking ques from it. It doesnt really matter why the debugger fixes the problem, the root cause has been found.
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Selecting the last value of a column
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So this solution takes a string as its parameter. It finds how many rows are in the sheet. It gets all the values in the column specified. It loops through the values from the end to the beginning until it finds a value that is not an empty string. F...
split string in to 2 based on last occurrence of a separator
...ould like to know if there is any built in function in python to break the string in to 2 parts, based on the last occurrence of a separator.
...
Hide separator line on one UITableViewCell
...th.row != self.newCarArray.count-1){
UIImageView *line = [[UIImageView alloc] initWithFrame:CGRectMake(0, 44, 320, 2)];
line.backgroundColor = [UIColor redColor];
[cell addSubview:line];
}
for iOS 7 upper versions (including iOS 8)
if (indexPath.row == self.newCarArray.count-1) {
...