text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
|---|---|---|
so it's not wrong but this is again | 7,804.639 | 5.56 |
evidence of maybe bad design not so much | 7,806.76 | 5.959 |
with this small program but this is an | 7,810.199 | 4.081 |
example again of code smell like | 7,812.719 | 3.121 |
something smells a little off here like | 7,814.28 | 2.76 |
this is probably going to get us in | 7,815.84 | 4 |
trouble by separating related | 7,817.04 | 4.679 |
functionality so again it's a design | 7,819.84 | 4.96 |
principle not a correctness concern but | 7,821.719 | 5.48 |
class methods allow us to address this | 7,824.8 | 4.839 |
too let me go ahead and do this I'm | 7,827.199 | 4.201 |
going to delete get student alog | 7,829.639 | 4.801 |
together leaving only main as my other | 7,831.4 | 5.48 |
function here and inside of my student | 7,834.44 | 4.759 |
class I'm going to do this I'm going to | 7,836.88 | 4.44 |
define a function even more simply | 7,839.199 | 5.081 |
called get and by nature of how class | 7,841.32 | 4.72 |
methods work it's going to take in the | 7,844.28 | 3.799 |
name of the class itself or reference | 7,846.04 | 4.159 |
there too as an argument and I'm going | 7,848.079 | 3.721 |
to move the functionality from get | 7,850.199 | 3.4 |
student into the student class and I'm | 7,851.8 | 4.68 |
going to do this name equals input quote | 7,853.599 | 6.161 |
unquote name uh house equals input quote | 7,856.48 | 6.52 |
unquote house and then what this | 7,859.76 | 7.08 |
function is going to do is return a new | 7,863 | 7.119 |
student object by calling class which | 7,866.84 | 6.04 |
again is just an automatically passed in | 7,870.119 | 5.801 |
reference to the class itself passing in | 7,872.88 | 6.199 |
name and house and I will admit this | 7,875.92 | 5.48 |
syntax seems a little strange that now | 7,879.079 | 4.721 |
I'm calling CLS and I'm passing in these | 7,881.4 | 4.12 |
arguments but let me do one final fix | 7,883.8 | 3.399 |
here let me go to the top of this | 7,885.52 | 3.88 |
function and more explicitly say this is | 7,887.199 | 5.161 |
a class method this solves a potential | 7,889.4 | 4.92 |
chicken in the egg problem so to speak | 7,892.36 | 4 |
whereby one needs to come before the | 7,894.32 | 4.16 |
other potentially so what am I doing | 7,896.36 | 5.279 |
here inside of my student class I now | 7,898.48 | 6.36 |
have a function called get it is I shall | 7,901.639 | 5.6 |
claim a class method what does that mean | 7,904.84 | 5.399 |
it just means I can call this method | 7,907.239 | 6.121 |
without instantiating a student object | 7,910.239 | 5.44 |
first there in lies the potential | 7,913.36 | 4.08 |
Chicken and the Egg problem and if | 7,915.679 | 3.48 |
unfamiliar that's an expression meaning | 7,917.44 | 3.92 |
well did the world have chickens first | 7,919.159 | 4.201 |
that laid eggs or was there an egg that | 7,921.36 | 4.56 |
then Bor uh yielded the chickens but how | 7,923.36 | 4.08 |
did the egg get there it's this sort of | 7,925.92 | 3.04 |
weird circular problem and that's what | 7,927.44 | 4.159 |
we're facing here it would be weird if | 7,928.96 | 5.84 |
you had to create a student object in | 7,931.599 | 6.08 |
order to call get in order to get | 7,934.8 | 5.319 |
another student object like that sounds | 7,937.679 | 6.241 |
messy let's just get a student via a | 7,940.119 | 6.281 |
class method that by definition does not | 7,943.92 | 4.679 |
require you to create a student object | 7,946.4 | 4.159 |
first just like the Hat in its final | 7,948.599 | 5.241 |
form we use the Hat class to just say | 7,950.559 | 5.761 |
hat Capital h.s sort we didn't need to | 7,953.84 | 4.2 |
create a hat first we just used the | 7,956.32 | 4.279 |
class itself so what am I going to do | 7,958.04 | 5.199 |
here now let me go down to Main and | 7,960.599 | 4.921 |
instead of saying get student notice | 7,963.239 | 5.92 |
what I can now do student. get and | 7,965.52 | 6.44 |
everything else can stay the same all | 7,969.159 | 5.641 |
I've done now is I've migrated all of my | 7,971.96 | 4.84 |
logic from get student which was this | 7,974.8 | 4.319 |
own Standalone function but clearly | 7,976.8 | 5.08 |
related to students by name I've moved | 7,979.119 | 6.52 |
the same code really to inside of the | 7,981.88 | 6.319 |
student class in a more simply named | 7,985.639 | 4.201 |
function called get but I could still | 7,988.199 | 3.321 |
call it get student if I want it just | 7,989.84 | 3.48 |
sees a little redundant to call it get | 7,991.52 | 3.599 |
student in a student class so I'm | 7,993.32 | 4.16 |
simplifying so I have a method called | 7,995.119 | 5.12 |
get but I'm calling it a class method to | 7,997.48 | 4.88 |
avoid that chicken in the egg problem I | 8,000.239 | 4.88 |
want to be able to call get without | 8,002.36 | 5.52 |
having a student object in my universe | 8,005.119 | 5.881 |
already and the Syntax for that is at | 8,007.88 | 5.679 |
class method the convention is to give | 8,011 | 4.36 |
this method at least one argument by | 8,013.559 | 4.281 |
convention called CLS for class which is | 8,015.36 | 3.6 |
just going to be a reference to the | 8,017.84 | 3.719 |
class itself lines 11 and 12 are | 8,018.96 | 4.36 |
identical to what they've always been | 8,021.559 | 4.401 |
and get student the only new syntax here | 8,023.32 | 4.68 |
is this but this again is one of the | 8,025.96 | 4.52 |
features of object-oriented programming | 8,028 | 4.32 |
you can now | 8,030.48 | 5.04 |
instantiate a student object by just | 8,032.32 | 6.279 |
using CLS that's passed in I technically | 8,035.52 | 5.36 |
could use student capital S but it turns | 8,038.599 | 4.12 |
out I'm doing what's more conventional | 8,040.88 | 3.759 |
because this will both solve and avoid | 8,042.719 | 3.4 |
problems down the line with more | 8,044.639 | 4 |
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