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How to write log to file
....O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(f)
log.Println("This is a test log entry")
Based on the Go docs, os.Open() can't work for log.SetOutput, because it opens the file "for reading:"
func Open
...
Python debugging tips [closed]
...tparse
LOGGING_LEVELS = {'critical': logging.CRITICAL,
'error': logging.ERROR,
'warning': logging.WARNING,
'info': logging.INFO,
'debug': logging.DEBUG}
def main():
parser = optparse.OptionParser()
parser.add_option('-l', ...
How can I format my grep output to show line numbers at the end of the line, and also the hit count?
...
your solution seems fine but get an error awk95: syntax error at source line context is >>> ' <<< missing } awk95: bailing out at source line 1
– London
Oct 19 '10 at 12:27
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How can I check in a Bash script if my local Git repository has changes?
...g a task you want to run and $2 is a string optionally containing a custom error message on failure. For example, call it like require_clean_work_tree deploy "Skipping deploy, clean up your work tree or run dev-push"
– Umbrella
Dec 20 '18 at 14:01
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apache redirect from non www to www
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I get the error "The webpage at example.com has resulted in too many redirects" when using this suggestion. Do others have this problem?
– Jonathan Berger
Mar 28 '11 at 19:38
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Java generics type erasure: when and what happens?
...t;).
Despite that it makes generic arrays unusable and cause some strange errors for raw types:
List<String> l= List.<String>of("h","s");
List lRaw=l
l.add(new Object())
String s=l.get(2) //Cast Exception
it causes a lot of ambiguities as
void function(ArrayList<Integer> list...
How do I enumerate the properties of a JavaScript object? [duplicate]
...wnPropertyNames(obj) is what you want if you are dealing with some sort of Error object (ex. TypeError) because the properties are non-enumerable.
– vossad01
Oct 24 '16 at 16:18
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Getting “unixtime” in Java
...creation
– brabster
Apr 8 '09 at 22:05
9
The Java 32-bit int matches 32-bit platforms (and the ye...
Total memory used by Python process?
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I have this error: return [ wmi_object (obj, instance_of, fields) for obj in self._raw_query(wql) ] File "C:\Python27\lib\site-packages\win32com\client\util.py", line 84, in next return _get_good_object_(self._iter.next(), result...
Pinging servers in Python
... function will still return True if you get a Destination Host Unreachable error.
Explanation
The command is ping in both Windows and Unix-like systems.
The option -n (Windows) or -c (Unix) controls the number of packets which in this example was set to 1.
platform.system() returns the platform n...