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Setting HTTP headers

...is now: func saveHandler(w http.ResponseWriter, r *http.Request) { // allow cross domain AJAX requests w.Header().Set("Access-Control-Allow-Origin", "*") } Maybe this will help someone as caffeine deprived as myself sometime :) ...
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How can I use MS Visual Studio for Android Development?

...; System > Advanced > Environment Variables) ANDROID_HOME = <install_path>\android-sdk ANDROID_NDK_ROOT = <install_path>\android-ndk ANT_HOME = <install_path>\apache-ant JAVA_HOME = <install_path>\jdk _JAVA_OPTIONS = -Xms256m -Xmx512m Download examples from here....
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Invoking JavaScript code in an iframe from the parent page

...oes not work for my gadget, here is my code document.getElementById('remote_iframe_0').contentWindow.my.create_element_gadg‌​et('verify_user');" remote_iframe_0 is created programmaticaly by a apache shindig server but window.parent.document.getElementById('remote_iframe_0').contentWindow.my.cr...
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PHP PDO returning single row

... Do you really need to LIMIT 1 all the time though? Knowing that you're selecting a UNIQUE value comes to mind. – Super Cat Feb 1 '17 at 3:10 ...
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Initialise a list to a specific length in Python [duplicate]

...dicts, do not use [{}]*10 -- that would give you a list with the same initially-empty dict ten times, not ten distinct ones. Rather, use [{} for i in range(10)] or similar constructs, to construct ten separate dicts to make up your list. ...
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What does `unsigned` in MySQL mean and when to use it?

... MySQL says: All integer types can have an optional (nonstandard) attribute UNSIGNED. Unsigned type can be used to permit only nonnegative numbers in a column or when you need a larger upper numeric range for the column. For e...
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How to send HTML-formatted email? [duplicate]

... Setting isBodyHtml to true allows you to use HTML tags in the message body: msg = new MailMessage("xxxx@gmail.com", "yyyy@gmail.com", "Message from PSSP System", "This email sent by the PSSP system<br />" + ...
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How to download Xcode DMG or XIP file?

... For Xcode 9, I am told that I am not allowed to view that page. What shall I do? – Mr. Xcoder Jun 6 '17 at 18:45 9 ...
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Tooltip on image

... Using javascript, you can set tooltips for all the images on the page. <!DOCTYPE html> <html> <body> <img src="http://sushmareddy.byethost7.com/dist/img/buffet.png" alt="Food"> <img src="http://sushmareddy.byethost7.com/dist/...
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SQL WITH clause example [duplicate]

...roduced by Oracle in the Oracle 9i release 2 database. The SQL WITH clause allows you to give a sub-query block a name (a process also called sub-query refactoring), which can be referenced in several places within the main SQL query. The name assigned to the sub-query is treated as though it was an...