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“var” or no “var” in JavaScript's “for-in” loop?
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104
Use var, it reduces the scope of the variable otherwise the variable looks up to the nearest cl...
Apache Spark: The number of cores vs. the number of executors
... and
yarn.nodemanager.resource.cpu-vcores, should probably be set to 63 *
1024 = 64512 (megabytes) and 15 respectively. We avoid allocating 100%
of the resources to YARN containers because the node needs some
resources to run the OS and Hadoop daemons. In this case, we leave a
gigabyte and a core fo...
How to set time delay in javascript
... need a delay when you click the image a second time. The delay should be 1000ms. So you would click the img.jpg then the img_onclick.jpg would appear. You would then click the img_onclick.jpg image there should then be a delay of 1000ms before the img.jpg is shown again.
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configure: error: C compiler cannot create executables
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You have an old set of developer tools. gcc is reporting its version as 4.0.1. This may be left over from migrating from an older version of the OS. If you've installed Xcode 4.3.x, you need to launch it, go into its preferences, select the Downloads tab, and click "Install" next to the Command Lin...
How do you unit test a Celery task?
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answered Aug 22 '12 at 20:33
FlaPer87FlaPer87
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How does the SQL injection from the “Bobby Tables” XKCD comic work?
...en the SQL query they inject results in valid SQL.
Edited again as per dan04's astute comment
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What is the proper way to re-attach detached objects in Hibernate?
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answered Dec 14 '10 at 10:50
mikhailfrancomikhailfranco
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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'
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How to change column datatype in SQL database without losing data
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You can easily do this using the following command. Any value of 0 will be turned into a 0 (BIT = false), anything else will be turned into 1 (BIT = true).
ALTER TABLE dbo.YourTable
ALTER COLUMN YourColumnName BIT
The other option would be to create a new column of type BIT, fill it ...
Catch browser's “zoom” event in JavaScript
...nd
you’ve got the zoom level. See test
case.
http://web.archive.org/web/20080723161031/http://novemberborn.net/javascript/page-zoom-ff3
You could also do it using the tools of the above post. The problem is you're more or less making educated guesses on whether or not the page has zoomed. This wi...