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What are valid values for the id attribute in HTML?
...ill never wonder "was it firstName or FirstName?" because you will always know that you should type first_name. Prefer camel case? Then limit yourself to that, no hyphens or underscores, and always, consistently use either upper-case or lower-case for the first character, don't mix them.
A now ve...
How do I convert an existing callback API to promises?
...ferreds you can do the following (let's use Q for this example, although Q now supports the new syntax which you should prefer):
function getStuffAsync(param) {
var d = Q.defer();
getStuff(param, function(err, data) {
if (err !== null) d.reject(err);
else d.resolve(data);
...
Getting SyntaxError for print with keyword argument end=' '
...ys, i just remember those whistle and old-day scene but not the lyris, and now i finally figure out what that song is!!
– Sphynx-HenryAY
Mar 10 '17 at 20:01
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What's the difference between an id and a class?
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Just confused these two things for quite a long time. Now I understood that "id" should be referred with unique element while "class" can be applied into multiple elements or things according their difference
– Michael Lai
Jul 20 '13 at 3:0...
First-time database design: am I overengineering? [closed]
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1. Thanks, that's reassuring! 2 & 3. I still don't know how indexes work, it's something I have planned to read up on. If we ever have the "problem" of reaching a million records there will probably be a budget to hire experienced developers :P Thanks for the insight into diff...
Input size vs width
...wer is correct according to the HTML specification. I've edited the answer now to clarify things a bit.
– Mark Bell
Aug 5 '15 at 10:19
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sho...
Node.js on multi-core machines
... entire box; I crashed the kernel on a CentOS5 box by stress-testing Node (now THAT really isn't supposed to happen). I've come around a bit, and I see a bright future for Node, potentially including dedicated LB-type roles. Just not yet.
– Dave Dopson
Jan 16...
Do declared properties require a corresponding instance variable?
...e Modern Objective-C Runtime (that's either iOS 3.x or greater, or 64-bit Snow Leopard or greater) then you do not need to define ivars for your properties in cases like this.
When you @synthesize the property, the ivar will in effect be synthesized also for you. This gets around the "fragile-ivar"...
How to configure git push to automatically set upstream without -u?
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You can now do git config --global push.default current.
– Andrea Bergonzo
Feb 12 '18 at 23:03
2
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How do I trim leading/trailing whitespace in a standard way?
...st answer isn't good at all unless you don't care about memory leaks. You now have two overlapping strings (the original, which has it's trailing spaces trimmed, and the new one). Only the original string can be freed, but if you do, the second one points to freed memory.
– D...