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Intent - if activity is running, bring it to front, else start a new one (from notification)
My app has notifications, which - obviously - without any flags, start a new activity every time so I get multiple same activities running on top of each other, which is just wrong.
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Getting a File's MD5 Checksum in Java
...eDigest md = MessageDigest.getInstance("MD5");
try (InputStream is = Files.newInputStream(Paths.get("file.txt"));
DigestInputStream dis = new DigestInputStream(is, md))
{
/* Read decorated stream (dis) to EOF as normal... */
}
byte[] digest = md.digest();
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How can I pass data from Flask to JavaScript in a template?
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The ideal way to go about getting pretty much any Python object into a JavaScript object is to use JSON. JSON is great as a format for transfer between systems, but sometimes we forget that it stands for JavaScript Object Notatio...
Random Gaussian Variables
...d for a quick-and-dirty solution. A simple implementation:
Random rand = new Random(); //reuse this if you are generating many
double u1 = 1.0-rand.NextDouble(); //uniform(0,1] random doubles
double u2 = 1.0-rand.NextDouble();
double randStdNormal = Math.Sqrt(-2.0 * Math.Log(u1)) *
Ma...
Can a foreign key be NULL and/or duplicate?
... I think there is a better way to solve this problem. Rather than creating new columns, you can have two columns, namely "id" and "type", which will contain the id and name of the foreign key table. Eg, id=1, type=Picture will represent link to Picture table with id 1. Advantage of using this soluti...
How can I use jQuery in Greasemonkey?
... Rob, So what do I need to do? I'm creating my user scripts using the New User Script link. I add the @require and it didn't work. So how can I make it work? Please explain I want the @require method to work cause it is much more elegant than the script element method
– K...
Get the last inserted row ID (with SQL statement) [duplicate]
I want to get the new created ID when you insert a new record in table.
3 Answers
3
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How to get values from IGrouping
...umerables back into one IEnumerable all together:
List<smth> list = new List<smth>();
IEnumerable<IGrouping<int, smth>> groups = list.GroupBy(x => x.id);
IEnumerable<smth> smths = groups.SelectMany(group => group);
List<smth> newList = smths.ToList();
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How can I check if a view is visible or not in Android? [duplicate]
...screen. If that's what you're after; this will work:
Rect scrollBounds = new Rect();
scrollView.getHitRect(scrollBounds);
if (imageView.getLocalVisibleRect(scrollBounds)) {
// imageView is within the visible window
} else {
// imageView is not within the visible window
}
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How to create directories recursively in ruby?
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Poping system command into sub-process is not the best idea. It's better to do it with the Ruby standard library to get error handling, check the result, etc.
– noraj
Oct 7 '19 at 21:31
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