大约有 3,300 项符合查询结果（耗时：0.0187秒） [XML]
How to validate GUID is a GUID
...2-characters long (after stripping dashes and curly brackets) and has only letters A-F and numbers.
There is certain style of presenting GUIDs (dash-placement) and regular expressions can be used to check for this, e.g.,
@"^(\{{0,1}([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4...
Display a float with two decimal places in Python
...marks as usual, prepended with f'... in the same way you would r'... for a raw string. Then you place whatever you want to put within your string, variables, numbers, inside braces f'some string text with a {variable} or {number} within that text' - and Python evaluates as with previous string forma...
Java OCR implementation [closed]
...E reference.
I used it successfully in a personal project to identify the letter from an image such as this, you can find all the source for the OCR component of my application on github, here.
share
|
...
How do you log content of a JSON object in Node.js?
...
To have an output more similar to the raw console.log(obj) I usually do use console.log('Status: ' + util.inspect(obj)) (JSON is slightly different).
share
|
imp...
Convert timestamp to readable date/time PHP
... date format is date('Y-m-d H:i:s'); Check the manual page for what other letters represent.
If you have a timestamp that you want to use (apparently you do), it is the second argument of date().
share
|
...
Regex to test if string begins with http:// or https://
...case insensitive wasn't working in asp.net so I just specified each of the letters.
Here's what I had to do to get it working in an asp.net RegularExpressionValidator:
[Hh][Tt][Tt][Pp][Ss]?://(.*)
Notes:
(?i) and using /whatever/i didn't work probably because javascript hasn't brought in all c...
RAII and smart pointers in C++
...ake sure that we close the file once we've finished with it. This has two drawbacks - firstly, wherever we use File, we will have to called File::close() - if we forget to do this, we're holding onto the file longer than we need to. The second problem is what if an exception is thrown before we clos...
Resource interpreted as Script but transferred with MIME type text/plain - for local file
...script code had thrown errors. I had some strings (in an array) containing letters found in UTF-8 encoding seen in east-europian languages like "ő". "Gergő" is nice comon Hungarian first name. The errors also has gone thanks god, since I could not run my code - but I did not investigate this furth...
Why static classes cant implement interfaces? [duplicate]
In my application I want to use a Repository that will do the raw data access ( TestRepository , SqlRepository , FlatFileRepository etc).
Because such a repository would be used throughout the runtime of my application it seemed like a sensible thing to me to make it a static class so I could go
...
Opposite of %in%: exclude rows with values specified in a vector
...egorical variable V1 in a data frame D1 can have values represented by the letters from A to Z. I want to create a subset D2, which excludes some values, say, B, N and T. Basically, I want a command which is the opposite of %in%
...