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Hidden features of Ruby
Continuing the "Hidden features of ..." meme, let's share the lesser-known but useful features of Ruby programming language.
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Eclipse - no Java (JRE) / (JDK) … no virtual machine
...eo) to re-run on my computer - I have run it before with no problems, but now I keep getting this error:
34 Answers
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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
...he parenthesis if there is less than two parameters passed to the method.
Now, the operator notation is a notation for method-call, which means it can't be used in the absence of the object which is being called.
I'll briefly detail the notations.
Prefix:
Only ~, !, + and - can be used in prefix...
Git Diff with Beyond Compare
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As @pClass mentions below, "bc3" is now an internal tool in newer versions of git. You should use a unique name, such as "beyondcompare3"
– Scott Wegner
Oct 26 '12 at 16:46
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How do you detect/avoid Memory leaks in your (Unmanaged) code? [closed]
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Valgrind also now works on OS X, so linux is not your only option.
– Michael Anderson
Oct 12 '10 at 3:01
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Delete files older than 15 days using PowerShell
...l be deleted), remove the switch to actually delete the files:
$old = 15
$now = Get-Date
Get-ChildItem $path -Recurse |
Where-Object {-not $_.PSIsContainer -and $now.Subtract($_.CreationTime).Days -gt $old } |
Remove-Item -WhatIf
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Random data in Unit Tests?
... counter-evidence to refute that the program works according to the spec.
Now, you can write the unit tests by hand, but it really is a mechanical task. It can be automated. All you have to do is write the spec, and a machine can generate lots and lots of unit tests that try to break your code.
I ...
How to change the value of ${user} variable used in Eclipse templates
... The risk is that this will break any plug in that needs to know the user ID (which is the documented value of the user.name property). It would be nice if there was a better way to adjust the value Eclipse will use for that variable.
– Diastrophism
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AutoLayout with hidden UIViews?
... this as the accepted answer? It's been available for three release cycles now.
– Ryan Romanchuk
Feb 13 '18 at 6:02
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appearanceWhenContainedIn in Swift
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Don't know why this is downvote since it 's the way to do it in iOS10 swift 3... Thanks
– Vassily
Dec 21 '16 at 14:47
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