character

问题 I am trying to write a function, that translates a string containing unicode characters into some default ASCII transcription. Ideally I'd like e.g. Ångström to become Angstroem or, if that is not possible, Angstrom . Likewise α=χ should become a=x (c?) or similar. Does Emacs have such built-in capabilities? I know I can get the names and similar of characters ( get-char-code-property ) but I know no built-in transcription table. The purpose is to translate titles of entries into meaningfully

问题 My programmer's instinct would say that a character constant in c (eg: 'x') is encoded using the machine character set from the machine on which it is compiled. However, the following exerpt is from "The C Programming Language: ANSI C Edition" "A character constant is a sequence of one or more characters enclosed in single quotes, as in 'x'. The value of a character constant with only one character is the numeric value of the charachter in the machine's character set at execution time."

问题 i have this error Tcl error : extra characters after close-brace proc exact {nick host handle channel text} { global db_handle network; set size exec curl -3 --ftp-ssl -k ftp://xxx:xxx@192.210.0.8:2300/source/ | grep \\.r | awk '{print $5}'| awk '{ SUM += $1} END { print SUM/1024/1024 }' putnow "PRIVMSG #chnnel :source has $size" } 回答1: Per the exec(n) man page you need to replace single quotes with curly braces. You also need [] around exec to invoke it: set size [exec curl -s -3 --ftp-ssl

问题 I found the following code to reverse a string in C in my university notes. I do not understand how the recursion works in this example since it seems magic to me! To be more specific, if I type the word "one" the program prints out the word "eno" . According to the explanation, the function reads characters from the user recursively until the user presses Enter('\n') and then prints out the reversed word. But how is it possible to print the word if the last time the function calls itself

问题 I'm trying to break/split a continues series of characters in a php string at a specific point e.g. AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA to AAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA 回答1: PHP has a function called chunk_split() which does exactly what you ask... $myLongString = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'; $splitString = chunk_split($myLongString, 20); echo $splitString; /* AAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA */ 回答2: I would use wordwrap() with the $break parameter as "

问题 I'm trying to break/split a continues series of characters in a php string at a specific point e.g. AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA to AAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA 回答1: PHP has a function called chunk_split() which does exactly what you ask... $myLongString = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'; $splitString = chunk_split($myLongString, 20); echo $splitString; /* AAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA */ 回答2: I would use wordwrap() with the $break parameter as "

问题 I'm looking for a regular expression that will match if the string contains the character * , but only once. It should match a*aa , aa*aaaaa , a*aaaa , but it should not match a**a , a**** , **** . any advice? 回答1: You can try this pattern: ^[^*]*\*[^*]*$ Explanations: ^ begining of the string [^*]* all characters except * zero or more times \* literal * [^*]* all characters except * zero or more times $ end of the string 回答2: It doesn't appear as though you're capturing any of this string --

问题 How can i check if a string include only characters (XSLT File)? <xsl:variable name="IsValid1"> <xsl:choose> <xsl:when test="string-length(//FirstName) > 0 and string-length(//LastName) > 0 and substring(//FirstName, 1, 3) != 'TST' and XXXX//FirtName only charactersXXXXX "> </xsl:when> <xsl:otherwise> </xsl:otherwise> </xsl:choose> </xsl:variable> 回答1: In XPath 1.0 (XSLT 1.0) you can use contains() . In XPath 2.0 (XSLT 2.0) you use matches() . You may want for example check for alphabetic

问题 I want to find all indexes for each occurrence of single alphabetical characters in a string. I don't want to catch single char html codes. Here is my code: import re s = "fish oil B stack peanut c <b>" words = re.finditer('\S+', s) has_alpha = re.compile(??????).search for word in words: if has_alpha(word.group()): print (word.start()) Desired output: 9 24 回答1: Using your format (as you wanted) but adding only a simple check. import re s = "fish oil B stack peanut c <b>" words = re.finditer(

问题 One of the problems I have with Google is that it seems to strip special characters like dots, commas and some other special characters, which are usually what I'm looking for when I'm trying to find anything programming-related ex: django @ sign returns irrelevant data. Perhaps you know a way (or an alternative/technique) to make this possible? Related Questions Effective Googling for short names Why would M# be harder to Google than C#? 回答1: Have you tried http://www.google.com/codesearch?