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How to unset a JavaScript variable?

... in the case of using var inside a function (though it may be get a little more complicated when you consider let) or in the case of "global" code the VariableEnvironment is attached to the global object (often window). References in the VariableEnvironment are not normally deletable - the process d...
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navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't

...r call to getCurrentPosition, for example, if you want the user to wait no more than 10 seconds before giving them a clue what is happening, use: navigator.geolocation.getCurrentPosition(successCallback,errorCallback,{timeout:10000}); Secondly, I have experienced quite different reliability in di...
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What is bootstrapping?

...strapping" is also used as a term for building a system using itself -- or more correctly, a predecessor version. For example, ANTLR version 3 is written using a parser developed in ANTLR version 2. share | ...
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XML Schema (XSD) validation tool? [closed]

...d to call it from the command line. Also, a commenter below points to this more complete wrapper utility. You could also use xmllint, which is part of libxml. You may well already have it installed. Example usage: xmllint --noout --schema XSD_FILE XML_FILE One problem is that libxml doesn't impl...
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What is a “web service” in plain English?

...ther programs can understand the output. The full definition is obviously more complex but you asked for plain English. share | improve this answer | follow ...
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Run git pull over all subdirectories [duplicate]

...  |  show 8 more comments 204 ...
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Using Auto Layout in UITableView for dynamic cell layouts & variable row heights

...!) of your constraints would need to look like: You can imagine that as more text is added to the multi-line body label in the example cell above, it will need to grow vertically to fit the text, which will effectively force the cell to grow in height. (Of course, you need to get the constraints ...
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What's the difference between django OneToOneField and ForeignKey?

...sually best serve's one's interests. The reverse QuerySet will never have more than one element, right? – Andy Feb 26 '17 at 4:37 ...
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How to get a list of all files that changed between two Git commits?

...-but-not-yet-committed files: git diff --name-only <starting SHA> More generally, the following syntax will always tell you which files changed between two commits (specified by their SHAs or other names): git diff --name-only <commit1> <commit2> ...
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how to unit test file upload in django

... Henning is technically correct -- this would be more of an integration test -- doesn't actually matter until you get into more complex code bases maybe even with an actual test team – Alvin May 2 '17 at 18:49 ...