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What's the difference between equal?, eql?, ===, and ==?

...nd the difference between these four methods. I know by default that == calls the method equal? which returns true when both operands refer to exactly the same object. ...
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Clear Application's Data Programmatically

I want to clear my application's data programmatically. 6 Answers 6 ...
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Drawing an SVG file on a HTML5 canvas

... EDIT Dec 16th, 2019 Path2D is supported by all major browsers now EDIT November 5th, 2014 You can now use ctx.drawImage to draw HTMLImageElements that have a .svg source in some but not all browsers. Chrome, IE11, and Safari work, Firefox works with some bugs (but nig...
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Temporarily disable Eclipse plugin

Is there a way to disable an Eclipse plugin without actually uninstalling it? 3 Answers ...
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Environment variables in Mac OS X

...:want launchctl setenv PATH $PATH Environment variables are not automatically updated in running applications. You will need to relaunch applications to get the updated environment variables (although you can just set variables in your shell, e.g. PATH=whatever:you:want; there's no need to relaunc...
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Query a parameter (postgresql.conf setting) like “max_connections”

.... The manual: This parameter can only be set at server start. To see all settings: SHOW ALL; There is also pg_settings: The view pg_settings provides access to run-time parameters of the server. It is essentially an alternative interface to the SHOW and SET commands. It also provide...
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Is there a difference between PhoneGap and Cordova commands?

I just installed Phonegap for the first time and just browsed through the docs. What confuses me is the fact that some docs are using the command "phonegap" and some "cordova". ...
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Is there a way to rename an Xcode 4 scheme?

I've been looking all over Xcode for this, but I can't find any place that allows you to rename an existing scheme in Xcode 4. Is this even possible? ...
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creating a strikethrough text?

... it really works, but can i change its properities i mean its size, its color something like that – nawfal cuteberg Mar 20 '12 at 12:35 ...
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Install gitk on Mac

Does anyone know how to install gitk on Mac? 13 Answers 13 ...