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How can I scan barcodes on iOS?
How can I simply scan barcodes on iPhone and/or iPad?
19 Answers
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Java ArrayList how to add elements at the beginning
...add the element at the beginning of the array (so it has the lowest index) and if the array has 10 elements adding a new results in deleting the oldest element (the one with the highest index).
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Cast a Double Variable to Decimal
...is not suited to keep an exact value, so if you first add numbers together and then convert to Decimal you may get rounding errors. You may want to convert the numbers to Decimal before adding them together, or make sure that the numbers aren't floating point numbers in the first place.
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Painless way to install a new version of R?
Andrew Gelman recently lamented the lack of an easy upgrade process for R (probably more relevant on Windows than Linux). Does anyone have a good trick for doing the upgrade, from installing the software to copying all the settings/packages over?
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How to Resize a Bitmap in Android?
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suppose you have large resolution image say 1200x1200 and when you display this, it will be full in the imageview. If i scale it down say 75% and the screen is so that it displays scaled image also fully in imageview, what should be done for such screens?
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function declaration isn't a prototype
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In C int foo() and int foo(void) are different functions. int foo() accepts an arbitrary number of arguments, while int foo(void) accepts 0 arguments. In C++ they mean the same thing. I suggest that you use void consistently when you mean n...
JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
Is there a standard on JSON naming? I see most examples using all lower case separated by underscore, aka snake_case , but can it be used PascalCase or camelCase as well?
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?
...re a universal JavaScript function that checks that a variable has a value and ensures that it's not undefined or null ? I've got this code, but I'm not sure if it covers all cases:
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Difference between web server, web container and application server
Please tell me the Difference between web server, web container and application server.
8 Answers
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How do I check for a network connection?
... This doesn't always work in WPF. Some laptops return false and some return true
– krilovich
Feb 10 '16 at 17:21
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