Ferret | An optimized substring search engine written in Go | Search Engine library
kandi X-RAY | Ferret Summary
kandi X-RAY | Ferret Summary
Also incorporates error-correction (Levenshtein distance 1) and simple Unicode-to-ASCII conversion. Allows for arbitrary sorting functions Allows you to map arbitrary data to your results, and quickly update this data. Author: Mark Canning Developed at/for: Tamber -
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QUESTION
I am trying to write a regexp to extract an URL components. The syntax can be found here: RFC 3986.
Some of the components are optional. So far I have:
...ANSWER
Answered 2022-Apr-10 at 15:22Your regular expression works fine if you just escape the slashes and preferably the colon as well. The result is (.+)\:\/\/(.*@)?(.+?)(:(\d*))?\/((.*)\?)?((.*)#)?(.*)
. Here is a simple script to show how it can be used to filter out invalid URIs:
Update Following the comments I have made the following modification:
- I have added
(\:((\d*)\/))?(\/)*
. Explanation:\:((\d*)
matches a colon and then any string of digits.- the
\/
after this matches a slash which should be after this string of digits. This is because the port must not contain any other characters but digits. So they cannot be found in the port-portion of the uri. - Finally, the entire port-matching expression is optional, hence the
?
. - The last part indicates that many or no slashes can follow the existing/non-existing port
Final regExp:
(.+)\:\/\/(.*\@)?(.+?)(\:((\d*)\/))?(\/)*((.*)\?)?((.*)\#)?(.*)
QUESTION
I am trying to see how spoken-word and read-word frequency correlate with performance on a word game. here is my reproducible sample:
...ANSWER
Answered 2022-Mar-09 at 22:28Perhaps something like this?
QUESTION
I am trying to see how word frequency correlates with phonotactic probability using R, but there are a few issues. First, and most generally, I don't know merge these two graphs together (i want them to appear on the same axis).
This leads to a second problem because the first graph's y values are in probabilities, and the second is a count, so the scales are not the same. Should I combine data frames first, or is there a simpler way to merge two graphs?
Here is the reproducible sample, and the code for my graphs:
...ANSWER
Answered 2022-Mar-09 at 20:44One way could be to use a second y axis. Although this method is to be used critically, in this situation I think it is appropriate:
QUESTION
I have tried this code:
...ANSWER
Answered 2022-Jan-20 at 07:26I expect something like this should work.
QUESTION
I am just trying to up my understanding of plotting Pandas Series data using Booleans to mask out values I don't want. I am not sure that what I have is the correct or efficient way to do it.
Don't get me wrong, I do get the chart I am after but are my assumptions on the syntax correct?
All I want to do is plot the non zero values on my chart. I have not formatted the charts as I would normally as this was just a test of Booleans and masking data and not for creating report grade charts.
If I masked this as a Pandas DataFrame I would do the following if df1 were my DataFrame. I understand this and it makes sense that the df1[mask] returns my values as required
...ANSWER
Answered 2022-Jan-17 at 02:40Your understanding of booleans and masking is correct.
You can simplify your syntax a little though: if you take a look at the plotly.express.bar documentation, you'll see that the arguments 'x'
and 'y'
are optional. You don't need to pass 'x'
or 'y'
because by default plotly.express will create the bars using the index of the Series as x and the values of the Series as y. You can also pass the masked series in place of the entire series.
For example, this will produce the same bar chart:
QUESTION
I'm learning python class. I'm confused about why c.x prints "dog" (not lemon),even with the diagram. I can understand why a.x prints cat.
Specifically, I have problem understanding why x in the instance C() is points to str "dog " in global frame. And what's the self in the dash-lined box mean and why its parent frame is global frame.
...ANSWER
Answered 2021-Nov-01 at 13:05Because B's constructor initializes the instance field x
to the value of the global x
("dog"
), not the class field x
.
If you wanted it to initialize an instance field with the class field, you'd do
QUESTION
I've got a simple program where I have two classes which are Hat
and Person
. Each Person
has a string name
, a int idNum
and a hat object. Each hat simply has a string of hatType
and a char of hatSize
. In the main method I want to simply declare 2 people and use a display method to show the information. Here's my current code, please go easy on me I'm still new to OOP in c++.
Person Class
...ANSWER
Answered 2021-Aug-30 at 09:20your Person class here:
QUESTION
I have data in the following format:
df1:
date1 animal animal cages sold 1/1/19 10:00:00 dog 3 1/1/19 11:00:00 horse 6 1/5/19 11:00:00 ferret 5 1/12/19 10:00:00 bird 2 1/12/19 11:00:00 hamster 3and I want to merge it with the following dataframe: (df2)
event date event type people attended 1/1/19 charity 7 1/4/19 food drive 10 1/12/19 raffle 15with the desired output:
(the dates from df2 can also have 1/1/19 00:00:00 format, it doesn't matter. But the dates from df1 MUST have the time)
date animal animal cages sold event type people attended 1/1/19 charity 7 1/1/19 10:00:00 dog 3 1/1/19 11:00:00 horse 6 1/4/19 food drive 10 1/5/19 11:00:00 ferret 5 1/12/19 raffle 15 1/12/19 10:00:00 bird 2 1/12/19 11:00:00 hamster 3I have tried output_df = pd.merge(df1, df2, left_on='date1', right_on='event date')
but that leads to repeated matches. I only need the rows from df2 to be there once, and be on their own separate row.
I was thinking maybe use df1.append(df2)
and then somehow make date1 and event date in the same column so I could then sort by that column.
Please please help!!!
...ANSWER
Answered 2021-Jun-30 at 20:56You're trying to concat, not merge. Just need to rename the date columns first, make the dates actual datetimes for sorting, then concat and sort.
QUESTION
I'm diagnosing some codegen and it's backed by some bazel macro backed by a custom bazel rule.
...ANSWER
Answered 2021-Mar-16 at 22:13bazel query --output=build //projX:all
will print out all the targets in that package after macro and glob expansion. It has comments with the macro expansion stack traces for each target, including filenames and line numbers for the macro definitions.
//projX:all
is form of wildcard which specifies all the targets in that package. Macros can only generate targets in a single package, so that will always include all targets generated from that macro invocation.
QUESTION
so i'm fairly new to using python and I wanted to make a list of popular pets and have the person type in a number (that's assigned to an animal from a list of 10 in a dictionary) and print the correct animal from the number they typed in.
so far this is my code:
...ANSWER
Answered 2021-May-09 at 15:58Ok, two problems you have here.
First of all, a dictionary is like a door. You need a key to open a door. What is on the other side of the door is your value.
In your case, you want to access an animal, based on a number. The number will be a key and the animal will be your value.
So first step would be to reverse your dictionary key and values.
The second would be to change how you take an input and store it in a variable. Not like
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