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Why is typeof null “object”?
...in short: it is bug in ECMAScript, and the type should be null
reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null
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Git and nasty “error: cannot lock existing info/refs fatal”
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You want to try doing:
git gc --prune=now
See https://www.kernel.org/pub/software/scm/git/docs/git-gc.html
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How do I rename a Git repository?
...name a remote repository as follows:
Go to the remote host (for example, https://github.com/User/project).
Follow the host's instructions to rename the project (will differ from host to host, but usually Settings is a good starting point).
Go to your local repository directory (i.e., open a comman...
How do you check that a number is NaN in JavaScript?
...idn't realize this until @allsyed commented, but this is in the ECMA spec: https://tc39.github.io/ecma262/#sec-isnan-number
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How do you know a variable type in java?
...t more here:
How to determine the primitive type of a primitive variable?
https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html
http://docs.oracle.com/cd/E26806_01/wlp.1034/e14255/com/bea/p13n/expression/operator/Instanceof.html
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How do you check if a certain index exists in a table?
...s syntax is available since SQL Server 2016. Documentation for IF EXISTS:
https://blogs.msdn.microsoft.com/sqlserverstorageengine/2015/11/03/drop-if-exists-new-thing-in-sql-server-2016/
In case you deal with a primery key instead, then use this:
ALTER TABLE [TableName] DROP CONSTRAINT IF EXISTS [...
FormData.append(“key”, “value”) is not working
...e it
you need to use console.log(formData.getAll('your key'));
watch the
https://developer.mozilla.org/en-US/docs/Web/API/FormData/getAll
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Bootstrap control with multiple “data-toggle”
...iting your own workaround code at this stage though.
Check it out... :-)
https://github.com/twitter/bootstrap/issues/7011
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Android Studio - local path doesn't exist
...n the project.
Restart the IDE and re-import the project.
Original post: https://code.google.com/p/android/issues/detail?id=59018
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How do I iterate through the files in a directory in Java?
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For Java 7+, there is also https://docs.oracle.com/javase/7/docs/api/java/nio/file/DirectoryStream.html
Example taken from the Javadoc:
List<Path> listSourceFiles(Path dir) throws IOException {
List<Path> result = new ArrayList<>...