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Possible to access the index in a Hash each loop?
... obvious, but is there a way to access the index/count of the iteration inside a hash each loop?
2 Answers
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Concatenate strings in Less
...hink this is not possible, but I thought I ask in case there is a way. The idea is that I have a variable for path to web resource folder:
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Postgresql: Conditionally unique constraint
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it has already been said that PG doesn't define a partial (ie conditional) UNIQUE constraint. Also documentation says that the preferred way to add a unique constraint to a table is ADD CONSTRAINT Unique Indexes
The preferred way to add a uniq...
Solutions for INSERT OR UPDATE on SQL Server
...Insert-or-update you can easily
get primary key violation.
Solutions provided by @Beau Crawford & @Esteban show general idea but error-prone.
To avoid deadlocks and PK violations you can use something like this:
begin tran
if exists (select * from table with (updlock,serializable) where ke...
Git: copy all files in a directory from another branch
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This has a very weird side effect. It copies dirname over, but it also copies any files that are in the .gitignore of the master branch. Any idea why that is?
– Milimetric
Feb 24 '13 at 13:08
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What is the difference between `git fetch origin` and `git remote update origin`?
...to git fetch --all.
I should add the caveat that fetch and remote update didn't actually use the same codepath until v1.6.6.1 (released December 23 2009). Even before that, though, they did essentially the same thing, just using different code (possibly behaving slightly differently in corner cases...
Regex for string contains?
...ord boundary", that is, a point between characters where a word can be considered to start or end. For example, since spaces are used to separate words, there will be a word boundary on either side of a space.
If you want to check for it as part of the word, it's just Test, again with appropriate f...
Match whole string
...Jake if your string was "abc def ghi" then /^abc$/ would not work. ex: jsfiddle.net/XUyAc
– matchew
Jun 9 '11 at 20:41
3
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unable to copy/paste in mingw shell
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@parsecer Sorry that my answer didn't help you, but does this justify a downvote? It seems as if my answer is not so wrong for quite some people. And as I already added to my answer my solution doesn't apply to Windows 10.
– Andreas
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Specify format for input arguments argparse python
...ent and returns the converted value
You could do something like:
def valid_date(s):
try:
return datetime.strptime(s, "%Y-%m-%d")
except ValueError:
msg = "Not a valid date: '{0}'.".format(s)
raise argparse.ArgumentTypeError(msg)
Then use that as type:
parser.add...