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How do I check if a directory exists? “is_dir”, “file_exists” or both?
I want to create a directory if it does'nt exist already.
12 Answers
12
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Could I change my name and surname in all previous commits?
...er-branch --commit-filter 'if [ "$GIT_AUTHOR_NAME" = "Josh Lee" ];
then export GIT_AUTHOR_NAME="Hobo Bob"; export GIT_AUTHOR_EMAIL=hobo@example.com;
fi; git commit-tree "$@"'
This only affects the author, not the committer (which for most commits will be the same as the author). If you want to...
Android and in TextView
is it possible to add   in TextView? Has anyone achieved similar functionality?
7 Answers
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Haskell offline documentation?
...h to the base package) Hopefully it works for you!
EDIT2: This seems to fix the problem (for me):
$cd .cabal/share/hoogle-4.2.8/databases
$hoogle combine base.hoo
$hoogle foldl\'
Data.List foldl' :: (a -> b -> a) -> a -> [b] -> a
Data.Foldable foldl' :: Foldable t => (a -> b -...
Verifying signed git commits?
...andard error instead of the human-readable format.
Plus:
verify-tag exits successfully if the signature is good but the key is
untrusted. verify-commit exits unsuccessfully.
This divergence in behavior is unexpected and unwanted.
Since verify-tag existed earlier, add a failing test to ha...
A python class that acts like dict
...Oct 25 '10 at 12:47
Björn PollexBjörn Pollex
67.8k2424 gold badges170170 silver badges257257 bronze badges
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HTTP test server accepting GET/POST requests
...nk performs a GET, but if you do a POST to that url it works. Try: curl -iX POST httpbin.org/post it returns a 200.
– Robert
Nov 3 '15 at 23:36
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How do I check if a column is empty or null in MySQL?
...S NOT NULL e.g.
SELECT myCol
FROM MyTable
WHERE MyCol IS NULL
In your example you have various permutations of white space. You can strip white space using TRIM and you can use COALESCE to default a NULL value (COALESCE will return the first non-null value from the values you suppy.
e.g.
SELECT ...
Viewing unpushed Git commits
...te repository? Occasionally, git status will print out that my branch is X commits ahead of origin/master , but not always.
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