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XMLHttpRequest status 0 (responseText is empty)
...rdo I have readyState=4 and status=0 and the server is not running but the error's alert is showed me fast....how much time passes for "request time out"?
– user11751709
Dec 21 '19 at 16:39
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How to convert CFStringRef to NSString?
...reviously retained using retain will result in a reference count underflow error.
PS: can't seem to comment on Peter Hosey's answer - sorry for adding my own unnecessarily.
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python design patterns [closed]
...nd the primitive Null value.
This object just eats the lack of attribute error, and you can avoid checking for their existence.
It's nothing more than
class Null(object):
def __init__(self, *args, **kwargs):
"Ignore parameters."
return None
def __call__(self, *args, **k...
Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()
...ough the docs..the problem is...fixedThreadPool is causing a out of memory error @ 3 threads.. where as cachedPool is internally creating only a single thread..on increasing the heap size i am getting the same performance for both..is there anything else i am missing!!
– hakis...
How to get first element in a list of tuples?
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I tried it. It gives this error: int() argument must be a string or a number, not 'QuerySet'
– wasimbhalli
Aug 27 '12 at 12:50
4
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Does Python have “private” variables in classes?
...t will fail:
>>>x = A()
>>>x.__var # this will return error: "A has no attribute __var"
>>>x.printVar() # this gives back 123
But you can easily get away with this:
>>>x.__dict__ # this will show everything that is contained in object x
# w...
How to update npm
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to get rid of the annoying error run : rm /etc/apt/sources.list.d/cooperjona-ubuntu-nitrotasks-bionic.list
– Abdelghani AINOUSS
Oct 24 '18 at 21:05
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Exiting from python Command Line
... Seems like this method doesn't work if the script ran into an error.
– blaylockbk
Dec 6 '16 at 20:55
2
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Why Maven uses JDK 1.6 but my java -version is 1.7
...That doesn't work if maven is running using java 6. It just crashes with [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project {projectname}: Fatal error compiling: invalid target release: 1.7 -> [Help 1]
– Ga...
how to use javascript Object.defineProperty
...f not true, the property is read only; attempt to write is ignored without error*!
Both descriptors can have these members:
configurable - default false; if not true, the property can't be deleted; attempt to delete is ignored without error*!
enumerable - default false; if true, it will be iter...