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What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...introduction to quoting in Bash.
Arrays ($var vs. $var[@] vs. ${var[@]})
Now for your array. According to the bash manual:
Referencing an array variable without a subscript is equivalent to referencing the array with a subscript of 0.
In other words, if you don't supply an index with [], you...
Copy existing project with a new name in Android Studio
...(using a file manager) of the entire module folder and give it a new name. Now open it up and use Refactor -> Rename (right click on the item you want to rename) to rename your module and package.
See this for details about refactoring in IntelliJ/Android Studio.
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Managing CSS Explosion
...have been heavily relying on CSS for a website that I am working on. Right now, all the CSS styles are being applied on a per tag basis, and so now I am trying to move it to more of an external styling to help with any future changes.
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Inserting multiple rows in mysql
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@RPK. I agree with you but I don't know her data source. As I already wrote, if she has a file, I would use load data syntax as cularis suggests. :)
– Nicola Cossu
Jul 31 '11 at 11:54
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Why does the JVM still not support tail-call optimization?
...ementation and MLVM has listed the feature as "proto 80%" for some time now.
4 Answers
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“is” operator behaves unexpectedly with integers
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does anyone know how that range (-5, 256) was chosen? i wouldn't be too surprised if it were (0, 255) or even (-255, 255), but a range of 262 numbers starting at -5 seems surprisingly arbitrary.
– Woodrow Barlow
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shortcut in Android Studio to locate the current editing src file
Do you know how to check the location of current editing file in the project tree panel (the very left panel of the Android Studio), except manually. (The worst case is that all the folders there are collapsed)
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How to count lines of Java code using IntelliJ IDEA?
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Works in IDEA 12 now, not found in the repository you need to install via manually downloading.
– sjakubowski
Sep 18 '13 at 15:36
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Can you configure log4net in code instead of using a config file?
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Link is now dead
– Toby Smith
Feb 7 '19 at 22:26
@T...
CORS - What is the motivation behind introducing preflight requests?
...onfused as to the purpose of the preflight request but I think I've got it now.
The key insight is that preflight requests are not a security thing. Rather, they're a not-changing-the-rules thing.
Preflight requests have nothing to do with security, and they have no bearing on applications that ...