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How to enable LogCat/Console in Eclipse for Android?
...imple program in Android, I mistakenly closed LogCat window and I want to know how to show it again.
5 Answers
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Using Java to find substring of a bigger string using Regular Expression
...atcher("FOO[BAR]");
while (m.find()) {
String s = m.group(1);
// s now contains "BAR"
}
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How to get the previous URL in JavaScript?
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If you want to go to the previous page without knowing the url, you could use the new History api.
history.back(); //Go to the previous page
history.forward(); //Go to the next page in the stack
history.go(index); //Where index could be 1, -1, 56, etc.
But you can't man...
How do I get the key at a specific index from a Dictionary in Swift?
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@Max, this is old Swift syntax. Now you can use: dict.enumerated().forEach { (index, element) in ... }
– Matthew Korporaal
Jan 15 '19 at 10:28
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How can I convert a dictionary into a list of tuples?
...d not use iteritems (which no longer exists), but instead use items, which now returns a "view" into the dictionary items. See the What's New document for Python 3.0, and the new documentation on views.
1: Insertion-order preservation for dicts was added in Python 3.7
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startActivityForResult() from a Fragment and finishing child Activity, doesn't call onActivityResult
...tResult(Activity.RESULT_OK);
getActivity().finish();
Now Getting Result to Fragment with
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK &...
Check if image exists on server using JavaScript?
...request.
$.get(image_url)
.done(function() {
// Do something now you know the image exists.
}).fail(function() {
// Image doesn't exist - do something else.
})
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java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
...rence of the FragmentActivity solved the problem. My code looks as follows now:
public class MyFragmentActivity extends FragmentActivity implements OnFriendAddedListener {
private static WeakReference<MyFragmentActivity> wrActivity = null;
@Override
public void onCreate(Bundle s...
How to go back to previous page if back button is pressed in WebView?
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If using Android 2.2 and above (which is most devices now), the following code will get you what you want.
@Override
public void onBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
} else {
super.onBackPressed();
}
}
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Python Empty Generator Function
...should go to Unutbu for giving the first correct version of this answer.)
Now, you may find the above clearer, but I can imagine situations in which it would be less clear. Consider this example of a long list of (contrived) generator function definitions:
def zeros():
while True:
yiel...