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What does $_ mean in PowerShell?
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@Xalorous: Just because it doesn't produce an error doesn't mean it works: Get-ChildItem | Add-Member -Type NoteProperty -Name Bar -Value $_.Name -PassThru | Select Bar ... Well, it can work if you have a $_ in the scope where you're executing that pipeline. But that's v...
What is time_t ultimately a typedef to?
...ckup.
– Rob Kennedy
Jan 23 '09 at 5:05
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How to convert DateTime? to DateTime
...rt a nullable DateTime ( DateTime? ) to a DateTime , but I am getting an error:
11 Answers
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Checking network connection
...tp://216.58.192.142', timeout=1)
return True
except urllib2.URLError as err:
return False
Currently, 216.58.192.142 is one of the IP addresses for google.com. Change http://216.58.192.142 to whatever site can be expected to respond quickly.
This fixed IP will not map to goog...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
The error in the title is thrown only in Google Chrome, according to my tests. I'm base64 encoding a big XML file so that it can be downloaded:
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Maven2: Missing artifact but jars are in place
...isplace Maven. This tool gives me so many problems, and when it fails, the error messages are useless. Thanks for the solution, though. I've just wasted about an hour trying to get this resolved, but this suggestion finally worked for me.
– Mike Brennan
Dec 10 ...
Sibling package imports
... this topic).
– jfs
Nov 3 '17 at 18:05
@jfs I missed the virtual env path but i don't want to use anything more than s...
Do I cast the result of malloc?
...ong).
It makes you repeat yourself, which is generally bad.
It can hide an error if you forgot to include <stdlib.h>. This can cause crashes (or, worse, not cause a crash until way later in some totally different part of the code). Consider what happens if pointers and integers are differently...
Usage of __slots__?
...ent call last):
File "<stdin>", line 1, in <module>
AttributeError: foo
>>> Wrong.foo.__get__(w)
'foo'
The biggest caveat is for multiple inheritance - multiple "parent classes with nonempty slots" cannot be combined.
To accommodate this restriction, follow best practices: Fa...
Unique fields that allow nulls in Django
...True when declaring the field, or otherwise Django will throw a validation error (field required) or create a db column that doesn't accept NULL.
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