chars | commandline tool to display information | Command Line Interface library
kandi X-RAY | chars Summary
kandi X-RAY | chars Summary
cha(rs) is a commandline tool to display information about unicode characters
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of chars
chars Key Features
chars Examples and Code Snippets
def filter_valid_chars(ciphertext: list[int]) -> list[str]:
"""
Given an encrypted message, test all 3-character strings to try and find the
key. Return a list of the possible decrypted messages.
>>> from itertools import
public static String convertTurkishToLatin(String param) {
char[] turkishChars
= new char[]{0x131, 0x130, 0xFC, 0xDC, 0xF6, 0xD6, 0x15F, 0x15E, 0xE7, 0xC7, 0x11F, 0x11E};
char[] latinChars = new char[]{'i', 'I', 'u', '
private static Character[] getInvalidCharsByOS() {
String os = System.getProperty("os.name").toLowerCase();
if (os.contains("win")) {
return INVALID_WINDOWS_SPECIFIC_CHARS;
} else if (os.contains("nix") || os.conta
Community Discussions
Trending Discussions on chars
QUESTION
First time actually using anything to do with swing - sorry for the poor code and crude visuals!
Using swing for a massively over-complicated password checker school project, and when I came to loading in a JMenuBar, it doesn't render properly the first time. Once I run through one of the options first, it reloads correctly, but the first time it comes out like this:
First render attempt
But after I run one of the methods, either by clicking one of the buttons that I added to check if it was just the JFrame that was broken or using one of the broken menu options, it reloads correctly, but has a little grey bar above where the JMenuBar actually renders: Post-method render
The code for the visuals is as follows:
...ANSWER
Answered 2021-Jun-15 at 18:29You should separate creating your menu from your content. Please review the following example. I decoupled your menu, component, and event logic into meaningful phases.
QUESTION
Say I have a list of every single letter in the alphabet
...ANSWER
Answered 2021-Jun-15 at 18:04An option with tidyverse
- Get the objects in a named
list
(dplyr::lst
) - Convert the named list to a tibble -
enframe
unnest
thelist
column- Extract the substring from the 'name', convert it to upper case
- Do a join (
right_join
) with the 'chars' converted to atibble
arrange
the rows after replacing the NA with 'Unique'pull
the column as avector
QUESTION
I have paths that looks like this.
...ANSWER
Answered 2021-Jun-15 at 09:04For your first regex, you want:
^(?:[^\\]+\\\\){5}(\d+).*$
and for your second:
^(?:[^\\]+\\\\){6}(\d+).*$
if the paths truly include double-backslashes. If they are in fact single backslashes, the regex's should be ^(?:[^\\]+\\){5}(\d+).*$
and ^(?:[^\\]+\\){6}(\d+).*$
.
QUESTION
I have a file called messages.txt
which consists of many sentences separated by line. I am attempt to exclude the lines that contain non-alpha characters (I only want those that include characters from A-Z.
ANSWER
Answered 2021-Jun-15 at 03:32Based on my local testing using a UTF-8 encoded Python script, isalpha()
was returning false for inputs containing characters with accents:
QUESTION
We are programmatically creating PDF using our in house lib (C++) by adding all the required objects so that PDF readers can render them properly. Currently we are enhancing the lib to support digital signatures in PDF. Our users will use USB token or Windows certificates to sign the PDF. On studying raw PDF file with digital signature, we were able to make sense of all the objects except for the contents of Sig type object.
...ANSWER
Answered 2021-Jun-10 at 16:48Ok, the signature container is embedded correctly.
But there are issues with the signature container itself:
Both in the
SignedData.digestAlgorithms
collection and in theSignerInfo.digestAlgorithm
value you have used the OID of SHA1withRSA, but that is a full signature algorithm, not the mere digest algorithm SHA1 expected there.Then the SHA1 hash of the signed bytes is BB78A402F7A537A34D6892B83881266501A691A8 but the hash you signed is 90E28B8A0D8E48691DAFE2BA10A4761FFFDCCD3D. This might be because you hash buffer2 and
buffer2 has empty contents data (/Contents <>)
The hex string delimiters '<' and '>' also belong to the contents value and, therefore, must also be removed in buffer2.
Furthermore, your signature is very weak:
- It uses SHA1 as hash algorithm. SHA1 meanwhile has been recognized as too weak a hash algorithm for document signatures.
- It doesn't use signed attributes, neither the ESS signing certificate nor the algorithm identifier protection attribute. Many validation policies require such special attributes.
QUESTION
Edited: I want to extract the string between two special characters at the beginning and end.
Input can be one of the following:
{[TestString]}
{TestString}
[TestString]
[TestString]}
{[TestString
Expected Output: TestString
Here the special characters {
, [
, ]
, }
are optional. The input string can be with/without these special chars at the beginning and end.
Using this regex below in Pattern.compile()
, I am not getting the intended result.
(?=\[|\{)(.*?)(?=\]|\})
ANSWER
Answered 2021-May-05 at 17:46You used a lookahead assertion where you should have used lookbehind. Character classes make sure that either of [{
and ]}
will match:
QUESTION
already sorry for my English, I'm not an English speaker. I'm trying to write a bulls and cows game. The program generates a 4-digit number and the user needs to guess the digits. If the user guessed a number and its position, it's a bull. If the user only guessed the number, its a hit. I need to send it to our teacher in 3 files: function.h, function.c and main.c
I can't figure out how to seperate the code into 3 different files. Every time I'm trying to make a function out of an action it doesn't work like the simple code. The teacher asked us to write a function for the code generator, the validating of the guess, the bulls and the hits. I would appreciate any help. Thank you so much!
the simple code:
...ANSWER
Answered 2021-Jun-14 at 02:45Here. I improved it a bit.
function.h
:
QUESTION
I am using a 3.5: TFT LCD display with an Arduino Uno and the library from the manufacturer, the KeDei TFT library. The library came with a bitmap font table that is huge for the small amount of memory of an Arduino Uno so I've been looking for alternatives.
What I am running into is that there doesn't seem to be a standard representation and some of the bitmap font tables I've found work fine and others display as strange doodles and marks or they display upside down or they display with letters flipped. After writing a simple application to display some of the characters, I finally realized that different bitmaps use different character orientations.
My questionWhat are the rules or standards or expected representations for the bit data for bitmap fonts? Why do there seem to be several different text character orientations used with bitmap fonts?
Thoughts about the questionAre these due to different target devices such as a Windows display driver or a Linux display driver versus a bare metal Arduino TFT LCD display driver?
What is the criteria used to determine a particular bitmap font representation as a series of unsigned char values? Are different types of raster devices such as a TFT LCD display and its controller have a different sequence of bits when drawing on the display surface by setting pixel colors?
What other possible bitmap font representations requiring a transformation which my version of the library currently doesn't offer, are there?
Is there some method other than the approach I'm using to determine what transformation is needed? I currently plug the bitmap font table into a test program and print out a set of characters to see how it looks and then fine tune the transformation by testing with the Arduino and the TFT LCD screen.
My experience thus farThe KeDei TFT library came with an a bitmap font table that was defined as
...ANSWER
Answered 2021-Jun-12 at 16:19Raster or bitmap fonts are represented in a number of different ways and there are bitmap font file standards that have been developed for both Linux and Windows. However raw data representation of bitmap fonts in programming language source code seems to vary depending on:
- the memory architecture of the target computer,
- the architecture and communication pathways to the display controller,
- character glyph height and width in pixels and
- the amount of memory for bitmap storage and what measures are taken to make that as small as possible.
A brief overview of bitmap fonts
A generic bitmap is a block of data in which individual bits are used to indicate a state of either on or off. One use of a bitmap is to store image data. Character glyphs can be created and stored as a collection of images, one for each character in the character set, so using a bitmap to encode and store each character image is a natural fit.
Bitmap fonts are bitmaps used to indicate how to display or print characters by turning on or off pixels or printing or not printing dots on a page. See Wikipedia Bitmap fonts
A bitmap font is one that stores each glyph as an array of pixels (that is, a bitmap). It is less commonly known as a raster font or a pixel font. Bitmap fonts are simply collections of raster images of glyphs. For each variant of the font, there is a complete set of glyph images, with each set containing an image for each character. For example, if a font has three sizes, and any combination of bold and italic, then there must be 12 complete sets of images.
A brief history of using bitmap fonts
The earliest user interface terminals such as teletype terminals used dot matrix printer mechanisms to print on rolls of paper. With the development of Cathode Ray Tube terminals bitmap fonts were readily transferable to that technology as dots of luminescence turned on and off by a scanning electron gun.
Earliest bitmap fonts were of a fixed height and width with the bitmap acting as a kind of stamp or pattern to print characters on the output medium, paper or display tube, with a fixed line height and a fixed line width such as the 80 columns and 24 lines of the DEC VT-100 terminal.
With increasing processing power, a more sophisticated typographical approach became available with vector fonts used to improve displayed text quality and provide improved scaling while also reducing memory required to describe the character glyphs.
In addition, while a matrix of dots or pixels worked fairly well for languages such as English, written languages with complex glyph forms were poorly served by bitmap fonts.
Representation of bitmap fonts in source code
There are a number of bitmap font file formats which provide a way to represent a bitmap font in a device independent description. For an example see Wikipedia topic - Glyph Bitmap Distribution Format
The Glyph Bitmap Distribution Format (BDF) by Adobe is a file format for storing bitmap fonts. The content takes the form of a text file intended to be human- and computer-readable. BDF is typically used in Unix X Window environments. It has largely been replaced by the PCF font format which is somewhat more efficient, and by scalable fonts such as OpenType and TrueType fonts.
Other bitmap standards such as XBM, Wikipedia topic - X BitMap, or XPM, Wikipedia topic - X PixMap, are source code components that describe bitmaps however many of these are not meant for bitmap fonts specifically but rather other graphical images such as icons, cursors, etc.
As bitmap fonts are an older format many times bitmap fonts are wrapped within another font standard such as TrueType in order to be compatible with the standard font subsystems of modern operating systems such as Linux and Windows.
However embedded systems that are running on the bare metal or using an RTOS will normally need the raw bitmap character image data in the form similar to the XBM format. See Encyclopedia of Graphics File Formats which has this example:
Following is an example of a 16x16 bitmap stored using both its X10 and X11 variations. Note that each array contains exactly the same data, but is stored using different data word types:
QUESTION
I just began learning Airflow, but it is quite difficult to grasp the concept of Xcom. Therefore I wrote a dag like this:
...ANSWER
Answered 2021-Jun-11 at 06:01The command parameter
of SSHOperator
is templated thus you can get the xcom directly:
QUESTION
We do use .to_yaml
on ActiveRecord to dump some values of a record in to a .yml
file for backup reasons.
Those files are stored into a repository as those backup data is part of defaults for setup new systems.
Example:
...ANSWER
Answered 2021-Jun-11 at 15:11The issue is with lines that include only spaces.
These will format how you want:
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Install chars
Clone this repo,
cd into the checkout,
cargo install --path chars
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