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Appending to an existing string
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You can use << to append to a string in-place.
s = "foo"
old_id = s.object_id
s << "bar"
s #=> "foobar"
s.object_id == old_id #=> true
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improv...
Inserting HTML elements with JavaScript
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Using document fragments is very quick; faster than creating elements outside of the DOM and in certain situations faster than innerHTML.
Even though innerHTML is used within the function, it's all happening outside of the DOM so it's much faster than you'd think...
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Understanding dict.copy() - shallow or deep?
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Nice answer, but you might consider correcting the grammatical error in your first sentence. And there's no reason to not use L again in b. Doing so would simplify the example.
– Tom Russell
Oct 27 '17 at 4:47
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In Git, how can I write the current commit hash to a file in the same commit
...D > filename or perhaps git describe [--tags] > filename), and it avoids doing anything crazy like ending up with a file that's different from what git's tracking.
Your code can then reference this file when it needs the version number, or a build process could incorporate the information int...
How can I get clickable hyperlinks in AlertDialog from a string resource?
... .setTitle(R.string.dialog_title)
.setCancelable(true)
.setIcon(android.R.drawable.ic_dialog_info)
.setPositiveButton(R.string.dialog_action_dismiss, null)
.setView(message)
.create();
}
}
As shown here
http://picasaweb.google.com/lh/photo/up29wTQeK_zuz-LLvre9wQ?feat=directlink
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How to determine if Javascript array contains an object with an attribute that equals a given value?
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2018 edit: This answer is from 2011, before browsers had widely supported array filtering methods and arrow functions. Have a look at CAFxX's answer.
There is no "magic" way to check for something in an array without a loop. Even if you use some function, the function itself will u...
How to take backup of a single table in a MySQL database?
...You can use easily to dump selected tables using MYSQLWorkbench tool ,individually or group of tables at one dump then import it as follow: also u can add host information if u are running it in your local by adding -h IP.ADDRESS.NUMBER after-u username
mysql -u root -p databasename < dumpfileFO...
What are naming conventions for MongoDB?
...oDB official documentation mentions you may use underscores, also built-in identifier is named _id (but this may be be to indicate that _id is intended to be private, internal, never displayed or edited.
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How do I display an alert dialog on Android?
...lly dismissed when a dialog button is clicked.
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Continue with delete operation
}
})
// A null listener allows the but...
Android draw a Horizontal line between views
...ray colored Line between TextView & ListView
<TextView
android:id="@+id/textView1"
style="@style/behindMenuItemLabel1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dp"
android:text="FaceBook Feeds" />
<V...