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How to fix 'sudo: no tty present and no askpass program specified' error?
...ile some sources using a makefile. In the makefile there is a bunch of commands that need to be ran as sudo .
26 Answers
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Can an Android NFC phone act as an NFC tag?
... an NFC tag. Now my question is, can we switch this around? Can we make an Android NFC phone behave as the tag which an NFC reader will get data from?
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Create a string of variable length, filled with a repeated character
...Java form here: Java - Create a new String instance with specified length and filled with specific character. Best solution?
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Efficiently test if a port is open on Linux?
...mp;6
I'm using 6 as the file descriptor because 0,1,2 are stdin, stdout, and stderr. 5 is sometimes used by Bash for child processes, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127.0.0.1/445 || echo "N...
Does a finally block always run?
...mediately halted. It's up to the code in the thread to detect interruption and stop its task, so finally code should run.
– Bart van Heukelom
Jul 18 '11 at 14:57
2
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Resource interpreted as Document but transferred with MIME type application/zip
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That fixes Chrome, but breaks other browsers. My Android phones won't download from that kind of link.
– Betty
Aug 28 '15 at 11:20
38
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defaultdict of defaultdict?
...ultdict(int)) will be called when you try to access a key that don't exist and the return value of it will be set as the new value of this key which mean in our case the value of d[Key_dont_exist] will be defaultdict(int), and if you try to access a key from this last defaultdict i.e. d[Key_dont_exi...
What is the equivalent of Java's final in C#?
...inal keyword has several usages in Java. It corresponds to both the sealed and readonly keywords in C#, depending on the context in which it is used.
Classes
To prevent subclassing (inheritance from the defined class):
Java
public final class MyFinalClass {...}
C#
public sealed class MyFinalClass {...
List of lists into numpy array
... simple list of lists into a numpy array? The rows are individual sublists and each row contains the elements in the sublist.
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How do I pass the value (not the reference) of a JS variable to a function? [duplicate]
...ange_selection(i);
});
})(i);
}
By creating an anonymous function and calling it with the variable as the first argument, you're passing-by-value to the function and creating a closure.
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