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127 Return code from $?
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Value 127 is returned by /bin/sh when the given command is not found within your PATH system variable and it is not a built-in shell command. In other words, the system doesn't understand your command, because it doesn't know where to find the binary you're trying to call.
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How to see JavaDoc in IntelliJ IDEA? [duplicate]
...shows javadoc info. I think the way to show it is to use a shortcut - command + J , but when I click it, I get something wrong as on the screen shot below. Please advise me on how I can quickly get javadoc information. I need to at least know what type a method returns.
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Does free(ptr) where ptr is NULL corrupt memory?
...believe it's safe to assume free(NULL) is a nop as per instructed by the standard.
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Pandas: drop a level from a multi-level column index?
... If the index you are trying to drop is on the left (row) side and not the top (column) side, you can change "columns" to "index" and use the same method: >>> df.index = df.index.droplevel(1)
– Idodo
Nov 28 '18 at 12:13
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Android image caching
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And now the punchline: use the system cache.
URL url = new URL(strUrl);
URLConnection connection = url.openConnection();
connection.setUseCaches(true);
Object response = connection.getContent();
if (response instanceof Bitma...
Can Visual Studio 2012 be installed side-by-side w/ Visual Studio 2010?
Will Visual Studio 2012 interfere/break .NET 4 and/or Visual Studio 2010 if installed side-by-side on the same instance of Windows?
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How can I get a favicon to show up in my django app?
I just want to drop the favicon.ico in my staticfiles directory and then have it show up in my app.
12 Answers
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Android adb “Unable to open sync connection!”
I can run and debug my Android app on my phone just fine, most of the time. Then, seemingly randomly, when I try to run or debug my app from Eclipse, the Console in Eclipse says:
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Git status - is there a way to show changes only in a specific directory?
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No problem, and possibly - the newer versions of git do seem to make things easier.
– Sam Doidge
Dec 17 '12 at 16:12
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Difference between java.io.PrintWriter and java.io.BufferedWriter?
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The API reference for BufferedWriter and PrintWriter detail the differences.
The main reason to use the PrintWriter is to get access to the printXXX methods like println(). You can essentially use a PrintWriter to write to a file just like you would use System...