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Null coalescing in powershell
...e than a null coalescing operator, since it makes an array of all non-null items:
$items = $null, 'alpha', 5, 0, '', @(), $null, $true, $false
$instances = $items -ne $null
[string]::Join(', ', ($instances | ForEach-Object -Process { $_.GetType() }))
# Result:
System.String, System.Int32, System.I...
How to sort my paws?
...ms, particularly with dogs too small to make a clear pawprint... (It works best with large dogs, as the toes are more clearly seperated at the sensor's resolution.) Also, partial pawprints aren't recognized with this system, while they can be with the trapezoidal-pattern-based system.
However, bec...
Custom events in jQuery?
...king for some input on how to implement custom eventhandling in jquery the best way. I know how to hook up events from the dom elements like 'click' etc, but I'm building a tiny javascript library/plugin to handle some preview functionality.
...
How to have comments in IntelliSense for function in Visual Studio?
...ription>description</description>
</listheader>
<item>
<term>term</term>
<description>description</description>
</item>
</list>
The <listheader> block is used to define the heading row of either a table or d...
How do I execute a string containing Python code in Python?
...tack the system.
So, can eval be made safe? Hard to say. At this point, my best guess is that you can't do any harm if you can't use any double underscores, so maybe if you exclude any string with double underscores you are safe. Maybe...
It is hard to read and understand
From http://stupidpythonid...
What does pylint's “Too few public methods” message mean
...g a dictionary or a namedtuple instead. Although if a class seems like the best choice, use it. pylint doesn't always know what's best.
Do note that namedtuple is immutable and the values assigned on instantiation cannot be modified later.
...
Is there a simple way to delete a list element by value?
...)
So, it would keep all elements of a != 2.
To just take out one of the items use
a.remove(2)
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Creating JSON on the fly with JObject
...
The last one is definitively the best syntax to write json in c#.
– Anthony Brenelière
Feb 1 '18 at 16:00
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MySQL - UPDATE multiple rows with different values in one query
...he values are being shuffled around, then multiple updates is probably the best route.
– Gordon Linoff
Sep 7 '14 at 3:06
1
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The cast to value type 'Int32' failed because the materialized value is null
...works fine, but with ?? 0 it throws error. My another question is what is best practise in this case? DefaultIfEmpty(0) ? thanks
– zosim
Jul 28 '11 at 20:42
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