This sometimes happens when you have passed an incorrect number of arguments to an anonymous function: Object.keys(data).reduce((key: string) => { }, {}); will raise error: No overload matches this call. Overload 1 of 3 Pass it the correct number of arguments: Object.keys(data).reduce((acc: any, key: string) => { }, {});
These two explanations really aren’t contradictory if you take into account the fact that Linux hackers tend to be confused about the difference between a thread and a process, mainly due to the historical mistake of trying to pretend threads could be implemented as processes that share memory. 🙂 With that said, explanation #2 is … Read more
The accepted answer is basically correct, I just want to clarify things. The following example works well: #!/bin/bash cleanup() { rv=$? rm -rf “$tmpdir” exit $rv } tmpdir=”$(mktemp)” trap “cleanup” EXIT # Do things… But you have to be more careful if doing cleanup inline, without a function. For example this won’t work: trap “rv=$?; … Read more
With the addition of the signal.Signals enum in Python 3.5 this is now as easy as: >>> import signal >>> signal.SIGINT.name ‘SIGINT’ >>> signal.SIGINT.value 2 >>> signal.Signals(2).name ‘SIGINT’ >>> signal.Signals[‘SIGINT’].value 2
I had the same exact problem as you. Try moving self.parse_triggered = QtCore.pyqtSignal() out of your constructor but inside your class declaration. So instead of it looking like this: class Worker(QtCore.QThread): def __init__(self, parent = None): super(Worker, self).__init__(parent) self.parse_triggered = QtCore.pyqtSignal() It should look like this: class Worker(QtCore.QThread): parse_triggered = QtCore.pyqtSignal() def __init__(self, parent = … Read more
They are user-defined signals, so they aren’t triggered by any particular action. You can explicitly send them programmatically: #include <signal.h> kill(pid, SIGUSR1); where pid is the process id of the receiving process. At the receiving end, you can register a signal handler for them: #include <signal.h> void my_handler(int signum) { if (signum == SIGUSR1) { … Read more
The following should do it: (command1; command2) Note the added parentheses.
As others have already said, to handle Control+D, handle “end of file”s. Control+D is a piece of communication between the user and the pseudo-file that you see as stdin. It does not mean specifically “end of file”, but more generally “flush the input I typed so far”. Flushing means that any read() call on stdin … Read more
I had been trying to call an uninitialised Canvas inside another Class so when it was trying to get the height or width of it, it would crash.
Faye using Node.js was very easy to set up for me and initially performed very well in testing. However even though the load on my App is only about 10 requests per second with around 3000 open connections – when I switched it to live node.js cpu usage was pinned at 100% (1 core out … Read more