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How to check if a file exists from inside a batch file [duplicate]
I need to run a utility only if a certain file exists. How do I do this in Windows batch?
3 Answers
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Java switch statement: Constant expression required, but it IS constant
...) and definite assignment (§16).
In your example, the Foo.BA* variables do not have initializers, and hence do not qualify as "constant variables". The fix is simple; change the Foo.BA* variable declarations to have initializers that are compile-time constant expressions.
In other examples (whe...
Make div stay at bottom of page's content all the time even when there are scrollbars
... That solution is not good for 90% of cases. if you re-size your window, your footer will overlay other content and won't stop right at the end of your content
– vsync
Oct 28 '12 at 16:53
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How to check if the string is empty?
Does Python have something like an empty string variable where you can do:
25 Answers
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Looking to understand the iOS UIViewController lifecycle
...s. You won't get any of these features just using a UIView.
There's great documentation on Apple's site here. Putting in simply though:
ViewDidLoad - Called when you create the class and load from xib. Great for initial setup and one-time-only work.
ViewWillAppear - Called right before your view ...
How to print number with commas as thousands separators?
..., I want to show the number 1234567 as 1,234,567 . How would I go about doing this? I have seen many examples on Google, but I am looking for the simplest practical way.
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How to name and retrieve a stash by name in git?
I was always under the impression that you could give a stash a name by doing git stash save stashname , which you could later on apply by doing git stash apply stashname . But it seems that in this case all that happens is that stashname will be used as the stash description.
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When to use a “has_many :through” relation in Rails?
...r and Group.
If you wanted to have users belong to groups, then you could do something like this:
class Group < ActiveRecord::Base
has_many :users
end
class User < ActiveRecord::Base
belongs_to :group
end
What if you wanted to track additional metadata around the association? For exa...
Convert pandas timezone-aware DateTimeIndex to naive timestamp, but in certain timezone
...lize to make a Timestamp or DateTimeIndex timezone aware, but how can you do the opposite: how can you convert a timezone aware Timestamp to a naive one, while preserving its timezone?
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Git blame — prior commits?
...-rev option added to git blame:
git blame --ignore-rev fe25b6d
While this doesn't answer OP's question of giving the stack of commits (you'll use git log for that, as per the other answer), it is a better way of this solution, as you won't potentially misblame the other lines.
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