text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
|---|---|---|
you may not have ever noticed and indeed | 1,833.6 | 3.64 |
if you'd like to open up Google forms | 1,835.399 | 3.961 |
create a new form temporarily and poke | 1,837.24 | 4.319 |
around you will actually see in English | 1,839.36 | 4.199 |
at least quote unquote regular | 1,841.559 | 3.681 |
expression mentioned as one of the | 1,843.559 | 3.641 |
mechanisms you can use to validate your | 1,845.24 | 4.36 |
users's input into your Google form so | 1,847.2 | 4.52 |
in fact after today you can start | 1,849.6 | 4.079 |
avoiding these specific dropdowns of | 1,851.72 | 3.76 |
like email address or URL or the like | 1,853.679 | 4.36 |
and you can express your own patterns | 1,855.48 | 4.919 |
precisely as well regular Expressions | 1,858.039 | 4.961 |
can even be used in VSS code itself if | 1,860.399 | 5.041 |
you go and find or do a find and replace | 1,863 | 4.48 |
in vs code you can of course just type | 1,865.44 | 4.199 |
in words like you could into Microsoft | 1,867.48 | 4.84 |
Word or Google Docs you can also type if | 1,869.639 | 4.561 |
you check the right box regular | 1,872.32 | 3.92 |
expressions and start searching for | 1,874.2 | 5.479 |
patterns not literally specific values | 1,876.24 | 6.039 |
well let me propose that we now enhance | 1,879.679 | 4.681 |
this implementation further by | 1,882.279 | 4.081 |
introducing a few other symbols because | 1,884.36 | 4.52 |
right now with my code I keep saying | 1,886.36 | 4.439 |
that I want my email address to end with | 1,888.88 | 5.24 |
doedu and start with a username but I'm | 1,890.799 | 5.561 |
being a little too generous this does in | 1,894.12 | 4.12 |
fact work as expected for my own email | 1,896.36 | 5.48 |
address maen harvard.edu but what if I | 1,898.24 | 7.2 |
type in a sentence like my email address | 1,901.84 | 6.679 |
is maen harvard.edu and suppose I've | 1,905.44 | 4.92 |
typed that into the program or I've | 1,908.519 | 4.28 |
typed that into a Google form is this | 1,910.36 | 7.6 |
going to be considered valid or invalid | 1,912.799 | 7.921 |
well let's consider it's got the at sign | 1,917.96 | 5.28 |
so we're good there it's got one or more | 1,920.72 | 4.919 |
characters to the left of the at sign | 1,923.24 | 4.48 |
it's got one or more characters to the | 1,925.639 | 5.081 |
right of the at sign it's got a literal | 1,927.72 | 5.839 |
doedu somewhere in there to the right of | 1,930.72 | 4.679 |
the at sign and granted there's more | 1,933.559 | 3.641 |
stuff to the right there's literally | 1,935.399 | 3.561 |
this period at the end of my English | 1,937.2 | 4 |
sentence but that's okay because at the | 1,938.96 | 4.16 |
moment my regular expression is not so | 1,941.2 | 4.68 |
precise as to say the pattern must start | 1,943.12 | 6.2 |
with the username and end with the edu | 1,945.88 | 5.759 |
technically it's left unsaid what more | 1,949.32 | 4 |
can be to the left and what more can be | 1,951.639 | 4.241 |
to the right so when I hit enter now | 1,953.32 | 4.199 |
you'll see that that whole sentence in | 1,955.88 | 3.72 |
English is valid and that's obviously | 1,957.519 | 3.721 |
not what you want in fact consider the | 1,959.6 | 4.439 |
case of using Google forms or Office 365 | 1,961.24 | 5.12 |
to collect data from users if you don't | 1,964.039 | 4.52 |
validate your input your users might | 1,966.36 | 4 |
very well type in a full sentence or | 1,968.559 | 3.84 |
some else with a typographical error not | 1,970.36 | 3.88 |
an actual email so if you're just trying | 1,972.399 | 3.921 |
to copy all of the results that have | 1,974.24 | 3.36 |
been typed into your form so you can | 1,976.32 | 3.28 |
paste them into Gmail or some email | 1,977.6 | 3.64 |
program it's going to break because | 1,979.6 | 2.84 |
you're going to accidentally paste | 1,981.24 | 2.799 |
something like a whole English sentence | 1,982.44 | 3.599 |
into the program instead of just an | 1,984.039 | 4.041 |
email address which is what your mailer | 1,986.039 | 4.201 |
expects so how can I be more precise | 1,988.08 | 3.719 |
well let me propose we introduce a few | 1,990.24 | 4.319 |
more symbols as well it turns out in the | 1,991.799 | 4.88 |
context of a regular expression one of | 1,994.559 | 4.321 |
these patterns you can use the carrot | 1,996.679 | 4.72 |
symbol the little triangular Mark to | 1,998.88 | 4.72 |
represent that you want this pattern to | 2,001.399 | 4.361 |
match the start of the string | 2,003.6 | 4.36 |
specifically not anywhere but the start | 2,005.76 | 4.759 |
of the user string by contrast you can | 2,007.96 | 4.599 |
use a dollar sign in your regular | 2,010.519 | 4.081 |
expression to say that you want to match | 2,012.559 | 3.96 |
the end of the string or technically | 2,014.6 | 3.559 |
just before the new line at the end of | 2,016.519 | 3.081 |
the string but for all intents and | 2,018.159 | 3.201 |
purposes think of carrot as meaning | 2,019.6 | 3.88 |
start of the string and dollar sign as | 2,021.36 | 5.159 |
meaning end of the string it is a weird | 2,023.48 | 5.199 |
thing that one is a carrot and one is a | 2,026.519 | 3.721 |
dollar sign these are not really things | 2,028.679 | 3.281 |
that I think of as opposites like a | 2,030.24 | 3.52 |
parenthesis or something like that but | 2,031.96 | 3.28 |
those are the symbols the world chose | 2,033.76 | 4.279 |
many years ago so let me go back to vs C | 2,035.24 | 5.24 |
now and let me add this feature to my | 2,038.039 | 5.201 |
code here let me specify that yes I do | 2,040.48 | 4.679 |
want to search for this pattern but I | 2,043.24 | 4.559 |
want the users's input to start with | 2,045.159 | 4.641 |
this pattern and end with this pattern | 2,047.799 | 3.08 |
so even though it's going to start | 2,049.8 | 3.48 |
looking even more cryptic I put a carrot | 2,050.879 | 4.561 |
symbol here at the beginning and I put a | 2,053.28 | 4.399 |
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