I've implemented auto completion to a combobox like this article shows. Is it possible to make it search for substrings instead of just the beginning of the words?
http://www.codeproject.com/Articles/2371/IAutoComplete-and-custom-IEnumString-implementatio
I haven't found any way to customize how IEnumString/IAutoComplete compares the strings. Is it possible?
The built in search options help a bit but it is complete chaos. To find instring matches you need to set flag AcoWordFilter. But this will prevent from numbers being matched!! However, there is a trick to get the numbers to match: preced with a double-quote as in "3 to find a string containing or starting with "3". Some more chaos? In the AcoWordFilter you also need to prefix other characters not considered part of a "word", eg. you need to prefix parentheses with a " but then you will not find parentheses at the first position!
So the solution is either to create your own implementation of IAutoComplete or offer the user to switch between the modes (a bit awkward).
I dont think that the MS engineers are especially proud of such chaos. How about one more option: AcoSearchAnwhere?
After retrieving the Edit control's IAutoComplete interface, query it for an IAutoComplete2 interface. Calling its SetOptions member you can disable prefix filtering by specifying the ACO_NOPREFIXFILTERING AUTOCOMPLETEOPTIONS.
This is available on Windows Vista and later. If you need a solution that works with pre-Vista versions, you'll have to write your own.
Related
So I am trying to make a password validator in Scratch where it asks the user to input an answer and then it puts the answer through some criterias and then outputs if it is a valid password or not. The criterias are:
Has at least 8 characters,
Has at least one uppercase letter,
Has at least one lowercase letter,
Has at least one number,
Has at least one special character,
Must contain less than 18 characters.
I tried to make a list first with all the different characters and check if the password contained them, but it doesn't actually work. I looked all over the internet for help on this but no one seems to have done it. The Scratch Wiki does have some stuff about case sensitivity but I haven't really been able to implement it. I really need help and I have been trying for a while now. Thanks.
If you just check if the password contains the list, it will only work if it has every single character of the list in order. If you want to make sure it contains each check, you're probably going to have to make a system that checks each letter for every check, which is a little complex.
Check if <lowercase letter/whatever check> contains(letter(text reading #) of (password))
If it passes this check, continue to the next check and set text reading # to 1. Otherwise, change text reading # by 1.
I assume you'll know how to code this properly, but I just partially phrased in the way a normal human would.
This will repeat until either it reaches the end of the password or it passes the check. it will then do this again, but for a different check. It's hard to explain in text, and this is my first answer, but I hope it helps.
You have to use the operators "contains", "length of" and > operators, from the end of the class. Combine "contains", "or" and "and".
I would like to determine the Thousand Separator used while running a VBA Code on a target machine without resolving to calling system built-in functions such as (Separator = Application.ThousandsSeparator).
I am using the following simple code using 'Format':
ThousandSeparator = Mid(Format(1000, "#,#"), 2, 1)
The above seems to work fine, and would like to confirm if this is a safe method of doing it without resorting to system calls.
I would expect the result to be a single char string in the form of , or . or ' or a Space as applicable to the locale on the machine.
Please note that I want to only use a language statement such as Format or similar (no sys calls). Also this relates to Thousands Separator not Decimal Separator. This article Using VBA to detect which decimal sign the computer is using does not help or answer my question. Thanks
Thanks in advance.
The strict answer to whether it is safe to use Format to get the thousands separator is No.
E.g. on Windows, it is possible to enter up to three characters into the Thousands Separator field in the regional settings in the control panel.
Suppose you enter asd and click OK.
If you now call Format(1000, "#,#") it will give you 1a000. That is only the first letter of your thousands separator. You have failed to retrieve it correctly.
Reading the registry:
? CreateObject("WScript.Shell").RegRead("HKCU\Control Panel\International\sThousand")
you get back asd in full.
To be fair, the Excel international properties do not seem to be of much help either. Application.International(xlThousandsSeparator) in this situation will return the separator originally defined in your computer's locale, not the value you've overridden it to.
Having that said, the practical answer is Yes, because it would appear (and if you happen to know for sure, please post an answer here) that there is no culture with multi-char thousand separator (even in China where scary things like 1ε2345δΈ6789 or 1ε2345θ¬6789 exist, they happen to be represented with just one UTF-16 character), and you probably are happy to ignore the people who decided to play with their locale settings in that fashion.
I am working on an application to search for and build a list of all the times a string (or variable of) is in a text file. Kind of like a Find All function in a text editor that I can build a list with the info that is found, such as
S350
S250
S270
S5000
What can I use to do this search? It will have one value that does not change (The S in this case) followed by up to 4 digits
RegEx seems like a good choice.
Something like.. S(\d{1,4})? might work for you.
Expresso is my preferred regular expression composer.
I have url, for example:
http://i.myhost.com/myimage.jpg
I want to change this url to
http://i.myhost.com/myimageD.jpg.
(Add D after image name and before point)
i.e I want add some words after image name and before point using regex.
What is the best way do it using regex?
Try using ^(.*)\.([a-zA-Z]{3,5}) and replacing with \1D\2. I'm assuming the extension is 3-5 alphanumeric numbers but you can modify it to suit. E.g. if it's just jpg images then you can put that instead of the [a-zA-Z]{3,5}.
Sounds like a homework question given the solution must use a regex, on that assumption here is an outline to get you going.
If all you have is a URL then #mathematical.coffee's solution will suit. However if you have a chunk of text within which is one or more URLs and you have to locate and change just those then you'll need something a little more involved.
Look at the structure of a URL: {protocol}{address}{item}; where
{protocol} is "http://", "ftp://" etc.;
{address} is a name, e.g. "www.google.com", or a number, e.g. "74.125.237.116" - there will always be at least one dot in the address; and
{item} is "/name" where name is quite flexible - there will be zero or more items, you can think of them as directories and a file but this isn't strictly true. Also the sequence of items can end in a "/" (including when there are zero of them).
To make a regex which matches a URL start by matching each part. In the case of the items you'll want to match the last in the sequence separately - you'll have zero or more "directories" and one "file", the latter must be of the form "name.extension".
Once you have regexes for each part you just concatenate them to produce a regex for the whole. To form the replacement pattern you can surround parts of your regex with parentheses and refer to those parts using \number in the replacement string - see #mathematical.coffee's solution for an example.
The best way to learn regexs is to use an editor which supports them and just experiment. The exact syntax may not be the same as NSRegularExpression but they are mostly pretty similar for the basic stuff and you can translate from one to another easily.
Following conversion
SELECT to_tsvector('english', 'Google.com');
returns this:
'google.com':1
Why does TSearch2 engine didn't return something like this?
'google':2, 'com':1
Or how can i make the engine to return the exploded string as i wrote above?
I just need "Google.com" to be foundable by "google".
Unfortunately, there is no quick and easy solution.
Denis is correct in that the parser is recognizing it as a hostname, which is why it doesn't break it up.
There are 3 other things you can do, off the top of my head.
You can disable the host parsing in the database. See postgres documentation for details. E.g. something like ALTER TEXT SEARCH CONFIGURATION your_parser_config
DROP MAPPING FOR url, url_path
You can write your own custom dictionary.
You can pre-parse your data before it's inserted into the database in some manner (maybe splitting all domains before going into the database).
I had a similar issue to you last year and opted for solution (2), above.
My solution was to write a custom dictionary that splits words up on non-word characters. A custom dictionary is a lot easier & quicker to write than a new parser. You still have to write C tho :)
The dictionary I wrote would return something like 'www.facebook.com':4, 'com':3, 'facebook':2, 'www':1' for the 'www.facebook.com' domain (we had a unique-ish scenario, hence the 4 results instead of 3).
The trouble with a custom dictionary is that you will no longer get stemming (ie: www.books.com will come out as www, books and com). I believe there is some work (which may have been completed) to allow chaining of dictionaries which would solve this problem.
First off in case you're not aware, tsearch2 is deprecated in favor of the built-in functionality:
http://www.postgresql.org/docs/9/static/textsearch.html
As for your actual question, google.com gets recognized as a host by the parser:
http://www.postgresql.org/docs/9.0/static/textsearch-parsers.html
If you don't want this to occur, you'll need to pre-process your text accordingly (or use a custom parser).