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How can I remove a key and its value from an associative array?
...rm these edits inside of a foreach loop, then you need to prepend an ampersand to your enumeration variable to allow write access.
– FreeAsInBeer
Jul 30 '12 at 21:20
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MongoDB: update every document on one field
... all of these instances of foo. After running that I do a db.foo.findOne() and lastLookedAt is: 1327691719186, which translates to jruby-1.6.5 :011 > Time.at(1327691719186) => Sun Nov 16 02:19:46 -0500 44042
– randombits
Jan 27 '12 at 19:16
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Do browsers send “\r\n” or “\n” or does it depend on the browser?
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The HTTP and MIME specs specify that header lines must end with \r\n, but they aren't clear (some would argue that it isn't clear if they are clear) about what to do with the contents of a TEXTAREA. (See, for instance, this thread fro...
What is process.env.PORT in Node.js?
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In many environments (e.g. Heroku), and as a convention, you can set the environment variable PORT to tell your web server what port to listen on.
So process.env.PORT || 3000 means: whatever is in the environment variable PORT, or 3000 if there's nothing there...
xUnit : Assert two List are equal?
I'm new to TDD and xUnit so I want to test my method that looks something like:
4 Answers
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:first-child not working as expected
...1:first-child selector means
Select the first child of its parent
if and only if it's an h1 element.
The :first-child of the container here is the ul, and as such cannot satisfy h1:first-child.
There is CSS3's :first-of-type for your case:
.detail_container h1:first-of-type
{
color: bl...
Logging errors in ASP.NET MVC
...lication by plugging in Elmah.
You add the Elmah assembly to your project and then configure your web.config. It will then log exceptions created at controller or page level. It can be configured to log to various different places (like SQL Server, Email etc). It also provides a web frontend, so th...
How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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@blub: If you create a unique key on geb and topic it will work (ALTER TABLE table ADD UNIQUE geb_by_topic (geb, topic)).
– chaos
Aug 2 '09 at 13:43
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How to format a number 0..9 to display with 2 digits (it's NOT a date)
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This will generate an Android Linter Warning "Implicitly using the default locale is a common source of bugs: Use String.format(Locale, ...) instead"
– Christopher Stock
Feb 15 '19 at 10:36
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How do I make a transparent canvas in html5?
...Canvases are transparent by default.
Try setting a page background image, and then put a canvas over it. If nothing is drawn on the canvas, you can fully see the page background.
Think of a canvas as like painting on a glass plate.
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