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How to check for an undefined or null variable in JavaScript?

... And also note that typeof returns a string. So var myVar; typeof(myVar)==undefined returns false not true. – rism Nov 28 '15 at 7:57 ...
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Actionbar notification count icon (badge) like Google has

...nt = (Button) count.findViewById(R.id.notif_count); notifCount.setText(String.valueOf(mNotifCount)); return super.onCreateOptionsMenu(menu); } private void setNotifCount(int count){ mNotifCount = count; invalidateOptionsMenu(); } ...
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How to temporarily exit Vim and go back

... Can use $ ps to find whether we're in a vim sub-shell before calling $ exit to avoid closing the terminal accidentally. Found this here (I haven't tried the prompt indicator mentioned on the website). – Daniel May 2 '19 at 10:07 ...
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Convert Int to String in Swift

I'm trying to work out how to cast an Int into a String in Swift. 22 Answers 22 ...
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There is already an open DataReader associated with this Command which must be closed first

...some query. This can be easily solved by allowing MARS in your connection string. Add MultipleActiveResultSets=true to the provider part of your connection string (where Data Source, Initial Catalog, etc. are specified). sh...
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Java equivalents of C# String.Format() and String.Join()

...know this is a bit of a newbie question, but are there equivalents to C#'s string operations in Java? 16 Answers ...
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Parse (split) a string in C++ using string delimiter (standard C++)

I am parsing a string in C++ using the following: 17 Answers 17 ...
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How to insert newline in string literal?

In .NET I can provide both \r or \n string literals, but there is a way to insert something like "new line" special character like Environment.NewLine static property? ...
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How can I use PHP to dynamically publish an ical file to be read by Google Calendar?

...l($timestamp) { return date('Ymd\Tgis\Z', $timestamp); } function escapeString($string) { return preg_replace('/([\,;])/','\\\$1', $string); } $eol = "\r\n"; $load = "BEGIN:VCALENDAR" . $eol . "VERSION:2.0" . $eol . "PRODID:-//project/author//NONSGML v1.0//EN" . $eol . ...
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Android: How do I get string from resources using its name?

I would like to have 2 languages for the UI and separate string values for them in my resource file res\values\strings.xml : ...