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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(); ...
How do I find numeric columns in Pandas?
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You could use df.select_dtypes(include=[np.number]) if you don't need to specify a 'numerics' list
– KieranPC
Mar 19 '15 at 16:38
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OpenSSL: PEM routines:PEM_read_bio:no start line:pem_lib.c:703:Expecting: TRUSTED CERTIFICATE [close
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Since you are on Windows, make sure that your certificate in Windows "compatible", most importantly that it doesn't have ^M in the end of each line
If you open it it will look like this:
-----BEGIN CERTIFICATE-----^M
MIIDITCCAoqgAwIBAgIQL9+89q6RUm0PmqPfQDQ+mjANBgkqhkiG9w0B...
LINQ - Left Join, Group By, and Count
...ildTable on p.ParentId equals c.ChildParentId into j1
from j2 in j1.DefaultIfEmpty()
group j2 by p.ParentId into grouped
select new { ParentId = grouped.Key, Count = grouped.Count(t=>t.ChildId != null) }
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Which HTML5 tag should I use to mark up an author’s name?
...n alternatively be wrapped in a <footer> within an <article>
If you want to add the hcard microformat, then I would do so like this:
<article>
<header>
<h1 class="headline">Headline</h1>
<div class="byline vcard">
<addr...
awk without printing newline
...s printed after every line. You can change it to " " in the BEGIN section if you want everything printed consecutively.
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Convert a date format in PHP
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What if I get this date 0000-00-00 from mySQL? it returns a wrong date like 31/12/1969 ...
– Enrique
Apr 29 '10 at 22:20
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stash@{1} is ambiguous?
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If you have this error while working in Emacs with Magit on Windows (like me)
I hope this quick solution will help you:
(if (eq system-type 'windows-nt)
(defadvice magit-run-git (before magit-run-git-win-curly-braces (&a...
How to create a backup of a single table in a postgres database?
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with a slightly different sudo twist to this I ended up with a permission error on the file dump (logical enough since user postgres does not have write access on my directories) and I had an unknown flag error for --ignore-version. Prashan...
Does the join order matter in SQL?
...ON (a.x, a.y) = (b.x, b.y) and the two queries would still be equivalent.
If however, any of these involved IS NULL or a function that is related to nulls like COALESCE(), for example if the condition was b.ab_id IS NULL, then the two queries would not be equivalent.
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