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What is the difference between varchar and varchar2 in Oracle?

...dards. By the time the standards emerged it already had a burden of legacy apps. We all know how it happens. – Quassnoi Jun 1 '10 at 18:30 5 ...
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Is it possible to use Java 8 for Android development?

...er tools if you installed Java 8 JDK, then give it a try, if any problems appears try to set the compiler as 1.6 in Eclipse from window menu → Preferences → Java → Compiler. Java 7 will works too: Java 7 or higher is required if you are targeting Android 5.0 and higher. install mult...
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Detect whether there is an Internet connection available on Android [duplicate]

...signal, captive portals, content filters and the like can all prevent your app from reaching a server. For instance you can't tell for sure if your app can reach Twitter until you receive a valid response from the Twitter service. ...
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Why is printing to stdout so slow? Can it be sped up?

...s, you have just discovered the importance of I/O buffering. :-) The disk appears to be faster, because it is highly buffered: all Python's write() calls are returning before anything is actually written to physical disk. (The OS does this later, combining many thousands of individual writes into a...
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How to implement the Android ActionBar back button?

....lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference – Jones Mar 15 at 21:12 ...
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How to set target hosts in Fabric file

I want to use Fabric to deploy my web app code to development, staging and production servers. My fabfile: 15 Answers ...
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unit testing of private functions with mocha and node.js

I am using mocha in order to unit test an application written for node.js 9 Answers 9 ...
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UICollectionView inside a UITableViewCell — dynamic height?

One of our application screens requires us to place a UICollectionView inside of a UITableViewCell . This UICollectionView will have a dynamic number of items, resulting in a height which must be calculated dynamically as well. However, I am running into problems trying to calculate the heigh...
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Reference: What is variable scope, which variables are accessible from where and what are “undefined

...e accessible". Just because you wrote $foo = 'bar'; once somewhere in your application doesn't mean you can refer to $foo from everywhere else inside the application. The variable $foo has a certain scope within which it is valid and only code in the same scope has access to the variable. How is a ...
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Converting SVG to PNG using C# [closed]

...ilename: String); const ExecLine = 'c:\windows\system32\java.exe -jar C:\Apps\batik-1.7\batik-rasterizer.jar '; begin ExecNewProcess(ExecLine + aFilename, True); end; share | improve this answe...