大约有 47,000 项符合查询结果(耗时:0.0825秒) [XML]
process.env.NODE_ENV is undefined
...ODE_ENV=development on my Mac terminal before doing a react-native run-ios from the same terminal. When debugging, the value of process.env.NODE_ENV is undefined.
– Ash
Jun 26 '19 at 5:54
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Get: TypeError: 'dict_values' object does not support indexing when using python 3.2.3 [duplicate]
...ou can, would you care to explain python's rationale behind this decision? From a naive perspective I don't see any reason why the view should not allow indexing in this particular case. I assume there is a grander scheme behind the view concept that does not play with indexing, but some clarity wou...
Eclipse: Set maximum line length for auto formatting?
...you to edit the built-in profile to your heart's content, only to stop you from saving it with an unobtrusive notification that you CAN'T edit built-in profiles, and must create a copy and edit that instead.
– kungphu
Dec 13 '13 at 16:59
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Convert command line arguments into an array in Bash
...perate directly on $@ ;)
Here is how to do pass a a list of args directly from the prompt:
function echoarg { for stuff in "$@" ; do echo $stuff ; done ; }
echoarg Hey Ho Lets Go
Hey
Ho
Lets
Go
sha...
Putting a simple if-then-else statement on one line [duplicate]
...
That's weird. Here's a specific "Yes" example from PEP8. Yes: if x == 4: print x, y; x, y = y, x I guess, you know, hobgoblins and whatnot.
– anregen
Jul 13 '17 at 22:04
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Using multiple delimiters in awk
...on 2 different distros and I get the same behavior: I want to get the port from netstat -ntpl "netstat -ntpl |sed 's/:/ /' |awk '{print $5}' " works but could do without doulbe piping This works but I was not expecting the data on field 17: "netstat -ntpl |awk -F" |:" '{print $17}'"
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How do I get the time difference between two DateTime objects using C#?
...ethods for getting the days, hours, minutes, seconds and milliseconds back from this structure.
If you are just interested in the difference then:
TimeSpan diff = Math.Abs(dateTime1 - dateTime2);
will give you the positive difference between the times regardless of the order.
If you have just g...
error_log per Virtual Host?
..._error is turned on. You will notice that the Apache error log is separate from the PHP error log. The good stuff is in php.error.log.
Take a look here for the error_reporting key http://www.php.net/manual/en/errorfunc.configuration.php#ini.error-reporting
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Difference between StringBuilder and StringBuffer
...thods in a single thread is overkill.
That's pretty much about it.
Quote from StringBuilder API:
This class [StringBuilder] provides an API compatible with StringBuffer, but with no guarantee of synchronization. This class is designed for use as a drop-in replacement for StringBuffer in places...
Get context of test project in Android junit test case
... Android Testing Support Library. Link to announcement
You should extend from AndroidTestCase instead of TestCase.
AndroidTestCase Class Overview
Extend this if you need to access Resources or other things that depend on Activity Context.
AndroidTestCase - Android Developers
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