Note: This concern originally asked in 2009, when powershell didn't have assist to the && operator.
If we didn't have 'quick-circuits' in Java, we'd get a lots of NullPointerExceptions in the above traces of code.
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It is really a little extended than "&&", nevertheless it accomplishes the exact same issue with no scripting and is not also difficult to remember.
By wrapping your comparisons in in the 1st illustration you will be building ScriptBlocks; Therefore the PowerShell interpreter views it as In which-Object -and . Because the -and operator operates on boolean values, PowerShell casts the ScriptBlocks to boolean values.
Only the xls data files established on or after that day display. What's going on here? Do I really need to use a little something aside from nest -and and -or statements?
A minimum of phone it some thing additional descriptive, like "superseded" rather then duplicate. The original "one" can not be a duplicate of just about anything, it's the just one.
&& is notoriously challenging to search for on Google Search, but the most effective I've discovered is this information which claims to employ -and.
I also have confronted exactly the same difficulty. The cause is that I am employing an old Model of powershell (I'm by now on Windows 11). To examine Edition sort this in powershell: $PSVersionTable
Incredibly old query I am aware, but since this is what came up at the highest of my search engine results, I'll go ahead and remedy it with modern day CSS.
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A word of warning. Stringing alongside one another quite a few not selectors improves the specificity of your resulting selector, that makes it harder to override: you are going to generally really need to locate the selector with many of the nots and replica-paste it into your new selector.
If you simply wish to run numerous commands on an individual line and You do not treatment if the first one fails or not, You need to use ; For some of my purposes this is great.