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What should be the values of GOPATH and GOROOT?
...it via homebrew or via package and/or other ways.
If you are seeing output then your Go is installed.
It shows you all the envs that are set and are not.
If you see empty for GOROOT:
Run which go (On my computer : /usr/local/go/bin/go)
then export like this export GOROOT=/usr/local/go
If you s...
How to create a custom exception type in Java? [duplicate]
...custom exception classes. If you intend to reuse the exception in question then I would follow their answers/advice. However, If you only need a quick exception thrown with a message then you can use the base exception class on the spot
String word=reader.readLine();
if(word.contains(" "))
/*cre...
When to use extern in C++
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you should not declare global vars in a header, because then when 2 files include the same header file, it won't link (linker will emit an error about "duplicate symbol")
– kuba
May 2 '12 at 21:44
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How to open a local disk file with JavaScript?
...nt.body.appendChild(fileInput)
clickElem(fileInput)
}
Click the button then choose a file to see its contents displayed below.
<button onclick="openFile(dispFile)">Open a file</button>
<pre id="contents"></pre>
...
How to create your own library for Android development to be used in every program you write?
...le.
In the Create New Module window that appears, click Android Library, then click Next.
There's also an option to create a Java Library, which builds a traditional JAR file. While a JAR file is useful for many
projects—especially when you want to share code with other
platforms—it d...
With bash, how can I pipe standard error into another process?
...are expecting to have keyboard interaction but only 1 of them receives it, then you may be in an awkward situation. Try doing testing with something like grep instead. Plus you might find that both mouse/keyboard inputs are going to the 2nd command anyway rather than to weston.
...
Difference between dispatch_async and dispatch_sync on serial queue?
...e queue and the rest of your code will continue executing on that thread. Then at some point in the future, (depending on what else has been dispatched to your queue), Task 1 will execute and then Task 2 will execute.
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Position an element relative to its container
...lative to itself. In other words, the elements is laid out in normal flow, then it is removed from normal flow and offset by whatever values you have specified (top, right, bottom, left). It's important to note that because it's removed from flow, other elements around it will not shift with it (use...
How to export and import environment variables in windows?
...nt variables; the second set are user-level variables. Edit as needed and then import the .reg files on the new machine.
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MD5 algorithm in Objective-C
...t about files. If you want to create a MD5 from a file with these methods, then you can do NSData *fileContents = [NSData dataWithContentsOfFile:@"<yourPath>"]; NSString *myHash = [fileContents md5]; And yes, this would pull the whole file into memory. If you find a solution that works with fi...