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JavaScript checking for null vs. undefined and difference between == and ===
...gain, note that the last one is vague; it will also be true if a is null.
Now, despite the above, the usual way to check for those is to use the fact that they're falsey:
if (!a) {
// `a` is falsey, which includes `undefined` and `null`
// (and `""`, and `0`, and `NaN`, and [of course] `f...
Simple Log to File example for django 1.3+
...['console', 'logfile'],
'level': 'DEBUG',
},
}
}
Now what does all of this mean?
Formaters I like it to come out as the same style as ./manage.py runserver
Handlers - I want two logs - a debug text file, and an info console. This allows me to really dig in (if needed) an...
How do I pass multiple parameters into a function in PowerShell?
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Thanks for posting this as an answer. Knowing why something wrong is just as important as what wrong.
– Gavin Ward
Nov 23 '15 at 10:49
4
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What does !important mean in CSS?
...fusion happens as ! is a symbol for NOT in some languages but it's clearer now.
– Si8
Mar 13 '14 at 21:00
2
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Amazon products API - Looking for basic overview and information
...web service has undergone two name changes in recent history: it was also known as ECS and AAWS.
The signature process you're referring to is the same HMAC signature that all of the other AWS services use for authentication. All that's required to sign your requests to the Product Advertising API is...
Cosmic Rays: what is the probability they will affect a program?
... the chip feature size for CPUs in 1995 was around 0.35 µm or 350nm. It's now 1/10th that size at 35nm.
– Joe Koberg
Apr 5 '10 at 21:02
21
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Human readable javascripts in chrome developer tools
does anybody know whether Chrome Developer Tools can format javascripts into human readable form ? Some kind of beautifier would be handy. Let say that I'm using some JS library and I need to instantiate its object, so that I should know what to put into constructor. But searching through this huge ...
Dynamic Anonymous type in Razor causes RuntimeBinderException
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FYI: this answer is now very much out of date - as the author says himself in red at the beginning of the referenced blog post
– Simon_Weaver
Feb 6 '13 at 11:54
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Modify SVG fill color when being served as Background-Image
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This answer was great as of 2012, but now CSS masks and/or filters have been supported in all browsers for some time. I recommend that anyone reading this now check out the links in widged's answer below or just skip to CSS Masks here, which is a really easy solu...
Is there a vr (vertical rule) in html?
I know there is a hr (horizontal rule) in html, but I don't believe there is a vr (vertical rule). Am I wrong and if not, why isn't there a vertical rule?
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