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how to read System environment variable in Spring applicationContext
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-Dprop=... sets a java property in command line. You can read this property via System.getProperty("prop"). If you would like to read a OS property then use System.getenv("os-env-variable"). See javadoc: docs.oracle.com/javase/6/docs/api/java/lang/System.html
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How to rename a single column in a data.frame?
...set the second column's name. Your object only has one column, so the command throws an error. This should be sufficient:
colnames(trSamp) <- "newname2"
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delete_all vs destroy_all?
...ave a user whose user ID is across many tables. I want to delete this user and every record that has his ID in all tables.
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How to save an image to localStorage and display it on the next page?
... needs this problem solved:
Firstly, I grab my image with getElementByID, and save the image as a Base64. Then I save the Base64 string as my localStorage value.
bannerImage = document.getElementById('bannerImg');
imgData = getBase64Image(bannerImage);
localStorage.setItem("imgData", imgData);
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Convert a Map to a POJO
... looking at Jackson, but is seems I would have to convert the Map to JSON, and then the resulting JSON to the POJO.
8 Answ...
CSS I want a div to be on top of everything
...ered Sep 14 '11 at 19:22
Skylar AndersonSkylar Anderson
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What is the best way to detect a mobile device?
... attribute? I would like to run a different script if the browser is on a handheld device.
59 Answers
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How to uncheck a radio button?
...Query prop() help page for an explanation on the difference between attr() and prop() and why prop() is now preferable.
prop() was introduced with jQuery 1.6 in May 2011.
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How do I filter an array with AngularJS and use a property of the filtered object as the ng-model at
If I have an array of objects, and I want to bind the Angular model to a property of one of the elements based on a filter, how do I do that? I can explain better with a concrete example:
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How can I reorder my divs using only CSS?
... in that order in the HTML? Both div s contain data that varies in height and width.
24 Answers
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