The Big Programming Thread - Page 666

On September 17 2015 12:51 Birdie wrote:
Donald Knuth's Art of Computer Programming are supposed to be the best books on comp sci algorithms. I haven't had a chance to get my hands on them yet though.

On September 24 2015 21:09 Cynry wrote:
Well, Meteor isn't really pure JS. It even introduces ECMAscript 6 as its language with its last update.
I'm no expert on Meteor yet, only been working with it for a couple months now, so there's that too.

As I see it, this issue is pretty much solved by using intelligent queries when fetching data from the database, be it client or server.
Basically, the client gets a mirror of the server database, filtered by the following:
-Meteor.publish on the server, which allows you to set some names (a bit like routes) for access to specified data. Specification of what is returned uses the regular mongodb queries syntax, so you can limit (even dynamically) the fields you want to return, according or not to the user status (connected, admin etc);
-Meteor.subscribe on the client, which calls the previously defined published data by its name, and you can specifiy here too which data you want to receive.

These 2 combines forms the client side database (minimongo collections), but does not fetch any documents in it. It's just which data and fields of this data you can even see. You then need to fetch it with the usual mongo .find().fetch() or .findOne(), and here again, you can limit the field you're actually returning to your logic.
This is also valid on the server side, except it works with the whole database instead of the minimongo mirror.

So there's that, built-in Meteor, that could work.
There's also a schema package, that works a lot like Doctrine (except it's JSON), called SimpleSchema, which provides an customisable autoform option It can even turn mongo into a SQL-like database by attaching schema directly to collections (thus forcing checks on a user defined allowed set of fields for every insert/update)

Edit: I tried to ctrl + s this message way too many times ...

On September 26 2015 00:50 Cynry wrote:
Guess that's the good thing about being a noob in the different langages and their legacy, I don't have that kind of perception, for better or worst.
Why would you think that ? From the little I know, JS has grown a lot lately, node is gaining popularity quickly (I think it also handle databases ?).

On September 29 2015 01:39 spinesheath wrote:
Does anyone know what a "Senior .Net Professional" does?

On September 26 2015 21:27 Manit0u wrote:


I simply don't think that JS's place is in the backend. The inconsistencies in it scare me - like the implementation of the Date object, which is one of the most commonly used things in web development, being different across browsers. I hate working with dates in JS, it's needlessly convoluted. The comparison operators not working properly is another big issue (I'm working with PHP so I know how much such things can screw you over).

I don't know, maybe it's because I simply don't know enough about JS and I'm biased against it. In the company I work at we're trying to use as little JS as possible, only utilizing it in the frontend.

On September 29 2015 03:07 njt7 wrote:

"Php developer talking smack bout JS he he"
On a serious note though what's not working properly with the comparison operators? They working fine for me

'' == '0'           // false
0 == ''             // true
0 == '0'            // true

false == 'false'    // false
false == '0'        // true

false == undefined  // false
false == null       // false
null == undefined   // true

' \t\r\n ' == 0     // true

var a = [1,2,3];
var b = [1,2,3];

var c = { x: 1, y: 2 };
var d = { x: 1, y: 2 };

var e = "text";
var f = "te" + "xt";

a == b            // false
a === b           // false

c == d            // false
c === d           // false

e == f            // true
e === f           // true

"abc" == new String("abc")    // true
"abc" === new String("abc")   // false

// true as both operands are Type String (i.e. string primitives):
'foo' === 'foo'

var a = new String('foo');
var b = new String('foo');

// false as a and b are Type Object and reference different objects
a == b 

// false as a and b are Type Object and reference different objects
a === b 

// true as a and 'foo' are of different type and, the Object (a) 
// is converted to String 'foo' before comparison
a == 'foo'

On October 03 2015 18:07 Itsmedudeman wrote:
Quick question, might be a meaningless one and I might be overthinking it but I feel like I'm not since I've heard different things about coding practices. Anyways, I'm working in java and I have a class that stores different information like strings, integers, and also a list of arrays that's of size 2. The array is supposed to store a time range. So if 6 is the first value, and 7 is the second value then that represents 6 am to 7 am. So I was just wondering if it's correct to code this way or should I define a separate class for time range that holds a value for start and end? I feel like that would make the code more readable and easy to understand, but it might be a bit "out of the way" to code in such a fashion.

On October 03 2015 18:07 Itsmedudeman wrote:
Quick question, might be a meaningless one and I might be overthinking it but I feel like I'm not since I've heard different things about coding practices. Anyways, I'm working in java and I have a class that stores different information like strings, integers, and also a list of arrays that's of size 2. The array is supposed to store a time range. So if 6 is the first value, and 7 is the second value then that represents 6 am to 7 am. So I was just wondering if it's correct to code this way or should I define a separate class for time range that holds a value for start and end? I feel like that would make the code more readable and easy to understand, but it might be a bit "out of the way" to code in such a fashion.

On October 03 2015 18:21 Manit0u wrote:


First thing you should do in any language is do some research, so you don't end up reinventing the wheel...

https://docs.oracle.com/javase/tutorial/datetime/iso/datetime.html
https://docs.oracle.com/javase/tutorial/datetime/iso/period.html
http://joda-time.sourceforge.net/api-release/org/joda/time/Period.html
http://joda-time.sourceforge.net/api-release/org/joda/time/Interval.html