quotes

问题 The quote goes something like this: There's no problem in Computer Science that can't be solved by adding another layer of abstraction to it (Copied in this wording from http://blogs.oracle.com/fcmartin/2009/01/pardon_my_dust.html) There are a number of variations but I have been unable to find an originator. Since I quite like the quote with its tongue in cheek and quite a bit of truth, I would be interested to hear if anybody knows where this may come from. 回答1: This website attributes it

问题 I have an application which uses a Javascript-based rules engine. I need a way to convert regular straight quotes into curly (or smart) quotes. It’d be easy to just do a string.replace for ["] , only this will only insert one case of the curly quote. The best way I could think of was to replace the first occurrence of a quote with a left curly quote and every other one following with a left, and the rest right curly. Is there a way to accomplish this using Javascript? 回答1: You could replace

问题 I tried building a set of arguments in a variable and passing that to a script but the behavior different from what I expected. test.sh #!/bin/bash for var in "$@"; do echo "$var" done input usr@host$ ARGS="-a \"arg one\" -b \"arg two\"" usr@host$ ./test.sh $ARGS output -a "arg one" -b "arg two" expected -a arg one -b arg two Note if you pass the quoted arguments directly to the script it works. I also can work around this with eval but I wanted to understand why the first approach failed.

问题 I'm using Eclipse Juno on MacOSX Lion and have an issue with typing. I often print one quote/apostrophe and move the caret. But in this Mac version of Eclipse the quote as I type is highlighted by orange marker (it seems like Mac smart quotes feature) and when I move caret - quote disappears. (in Xcode and Appcode everything works ok). I tried defaults write NSGlobalDomain AutomaticQuoteSubstitutionEnabled -bool false to disable smart qotes globally, restarted the computer, but this doesn't

问题 This question already has answers here : Single quotes vs. double quotes in Python [closed] (19 answers) Closed 3 years ago . In PHP, a string enclosed in "double quotes" will be parsed for variables to replace whereas a string enclosed in 'single quotes' will not. In Python, does this also apply? 回答1: No: 2.4.1. String and Bytes literals ...In plain English: Both types of literals can be enclosed in matching single quotes ( ' ) or double quotes ( " ). They can also be enclosed in matching

问题 I have a Windows batch file I'm creating, but I have to ECHO a large complex string, so I'm having to put double quotes on either end. The problem is that the quotes are also being ECHOed to the file I'm writing it to. How do you ECHO a string like that and strip the quotes off? UPDATE: I've spent the last two days working on this and finally was able to kludge something together. Richard's answer worked to strip the quotes, but even when I put the ECHO in the subroutine and directly

问题 What is the difference between the quotes " and ' ? What about `? Is there an error in using different quotes ' and " below? $result = pg_query_params($dbconn, 'INSERT INTO users (username, email, passhash_md5) VALUES ($1, $2, $3)', array($username, $email, $passhash_md5 ) $result = pg_query_params( $dbconn, "SELECT user_id FROM users WHERE email = $1", array( $email ) ) 回答1: Variable-substitution isn't done when using single quotes ('), meaning that the values in your first example would

问题 What is the difference between the quotes " and ' ? What about `? Is there an error in using different quotes ' and " below? $result = pg_query_params($dbconn, 'INSERT INTO users (username, email, passhash_md5) VALUES ($1, $2, $3)', array($username, $email, $passhash_md5 ) $result = pg_query_params( $dbconn, "SELECT user_id FROM users WHERE email = $1", array( $email ) ) 回答1: Variable-substitution isn't done when using single quotes ('), meaning that the values in your first example would

问题 EDIT: the command substitution is not necessary for the surprising behavior, although it is the most common use case. The same question applies to just echo "'!b'" b=a # Enable history substitution. # This option is on by default on interactive shells. set -H echo '!b' # Output: '!b' # OK. Escaped by single quotes. echo $(echo '!b') # Output: '!b' # OK. Escaped by single quotes. echo "$(echo '$b')" # Output: '$b' # OK. Escaped by single quotes. echo "$(echo '!b')" # Output: history expands #

问题 I have this lines of text the number of quotes could change like: Here just one "comillas" But I also could have more "mas" values in "comillas" and that "is" the "trick" I was thinking in a method that return "a" list of "words" that "are" between "comillas" How I obtain the data between the quotes? The result should be: comillas mas, comillas, trick a, words, are, comillas 回答1: You can use a regular expression to fish out this sort of information. Pattern p = Pattern.compile("\"([^\"]*)\"")