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Can we omit parentheses when creating an object using the “new” operator?
... Flanagan1:
As a special case, for the new operator only, JavaScript simplifies the grammar by allowing the parenthesis to be omitted if there are no arguments in the function call. Here are some examples using the new operator:
o = new Object; // Optional parenthesis omitted here
d = new Date(); ...
Print Current Mercurial Revision Hash?
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In case people miss the solutions below if you want the full hash use: hg --debug id -i if you want template support use hg parent --template '{node}' Do not use hg log -l 1, its the latest repository changeset, not the current working copy changeset.
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How to flip windows in vim? [duplicate]
If I have 2 horizontally split windows, how to rotate them to get 2 vertically split windows?
4 Answers
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How to redirect to a 404 in Rails?
...self, there's no reason to; Rails has this functionality built in already. If you want to show a 404 page, create a render_404 method (or not_found as I called it) in ApplicationController like this:
def not_found
raise ActionController::RoutingError.new('Not Found')
end
Rails also handles Abs...
How do you truncate all tables in a database using TSQL?
...You cannot truncate tables which have foreign keys, so this will only work if there are no foreign key constraints between tables (or they have been disabled).
– marcj
Oct 1 '08 at 12:31
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connecting to MySQL from the command line
...nclude the "- u" "- p" etc, or are those replaced by the username etc 2) if there's no database created do you just leave that blank?
– Leahcim
Feb 27 '11 at 7:13
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Git branch diverged after rebase
...n't work, because the integrity of the branches history will be disturbed. If you are collaborating with others on this branch, force pushing is a bad idea, as it will cause other collaborators to become very confused when their history suddenly doesn't match.
TL;DR - If you're not collaborating, ...
How do I escape a single quote in SQL Server?
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So, if I have a text containing 10k words it'll be necessary I replace all my text?
– Vinicius Lima
Feb 14 '14 at 22:26
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Regular expression to extract text between square brackets
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\[(.*?)\]
Explanation:
\[ : [ is a meta char and needs to be escaped if you want to match it literally.
(.*?) : match everything in a non-greedy way and capture it.
\] : ] is a meta char and needs to be escaped if you want to match it literally.
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git: How to ignore all present untracked files?
...e from status just use:
git status -uno # must be "-uno" , not "-u no"
If you instead want to permanently ignore currently untracked files you can, from the root of your project, launch:
git status --porcelain | grep '^??' | cut -c4- >> .gitignore
Every subsequent call to git status wil...