quoting

quoting constants in php: “this is a MY_CONSTANT”

由 风格不统一 提交于 2019-12-17 16:32:31
问题 I want to use a constant in PHP, but I also want to put it inside double quotes like a variable. Is this at all possible? define("TESTER", "World!"); echo "Hello, TESTER"; obviously outputs "Hello, TESTER", but what I really want is something like: $tester = "World!"; echo "Hello, $tester"; outputs "Hello, World!". 回答1: Sorry, that's not the way constants in PHP work. You can put variables in double quotes and heredocs but not constants. 回答2: I recomend you to use concatenation because: When

Python module to shellquote/unshellquote? [duplicate]

由 荒凉一梦 提交于 2019-12-17 10:52:31
问题 This question already has answers here : How to escape os.system() calls? (10 answers) Closed 3 years ago . Is there anything in the Python standard library that will properly parse/unparse strings for using in shell commands? I'm looking for the python analog to perl's String::ShellQuote::shell_quote : $ print String::ShellQuote::shell_quote("hello", "stack", "overflow's", "quite", "cool") hello stack 'overflow'\''s' quite cool And, even more importantly, something which will work in the

How to escape the single quote character in an ssh / remote bash command?

由 Deadly 提交于 2019-12-17 10:51:36
问题 I'm building a small set of scripts for remotely starting, stopping and checking the status of a process. The stop of these scripts should look for a process and kill it. Therefore I do: ssh deploy@hera 'kill -9 `ps -ef | grep MapReduceNode | grep -v "grep" | awk -F " " '{print $2}' | head -n 1`' The problem here is that the awk tokenization step needs single quotes and these clash with the single quote utilized for executing the remote command via ssh. How can these single quotes be escaped?

SyntaxError: Non-ASCII character. Python

由 こ雲淡風輕ζ 提交于 2019-12-13 08:36:03
问题 Could somebody tell me which character is a non-ASCII character in the following: Columns(str) – comma-seperated list of values. Works only if format is tab or xls. For UnitprotKB, some possible columns are: id, entry name, length, organism. Some column names must be followed by a database name (i.e. ‘database(PDB)’). Again see uniprot website for more details. See also _valid_columns for the full list of column keyword. Essentially I am defining a class and trying to give it a comment to

Unable to quote table name in PDO with MSSQL

由 落爺英雄遲暮 提交于 2019-12-12 12:26:39
问题 I have to work with somebody's database for a game which sadly has a table named "User" or [dbo][User] and this can not be renamed. Now, I need to access this using PDO in PHP and when I use this query: $query = "SELECT UserId AS INTUSERID FROM dbo.User WHERE YahooId = 'abcdef'"; it fails, as in nothing is fetched since "User" is a reserved keyword there. From the MS SQL Server I can do this as: SELECT UserId AS INTUSERID FROM [GameName].[dbo].[User] WHERE YahooId = 'abcdef' and it works. How

Issue with quoting of IS, NULL, NOT, !, and other reserved strings in ON conditions of JOIN clauses in Zend Framework 2

由 帅比萌擦擦* 提交于 2019-12-11 17:57:43
问题 I have an SQL statement, that selets sport classes/courses ( courses ) with their trainers ( trainers ) over an association table ( courses_trainers ). Since some courses have multiple trainers, I use the GROUP_CONCAT(...) function to get the trainer names into one field. Some trainers rows are empty or NULL , so I add a trainers.name IS NOT NULL and a trainers.name != "" condition to the ON clause of the trainers JOIN : SQL statement SELECT courses.id AS id, GROUP_CONCAT(DISTINCT trainers

Can I use jsoup to determine whether an HTML attribute is enclosed in single or double quotes (or none)?

由 百般思念 提交于 2019-12-11 02:58:51
问题 I'm using jsoup to parse HTML documents and perform some analysis on them. After parsing, is there any way to determine whether a given attribute was enclosed in double quotes, single quotes, or no quotes? In other words, is there any way I could distinguish the following: Document foo = Jsoup.parse("<html><body><a name=\"value\"></body></html>"); Document bar = Jsoup.parse("<html><body><a name='value'></body></html>"); Document baz = Jsoup.parse("<html><body><a name=value></body></html>");

Understanding escaped parentheses in find

由 丶灬走出姿态 提交于 2019-12-11 02:26:53
问题 I've cobbled together what is below, and it seems to work, with the possible exception of the "! -empty". One thing I'm learning (as I go) is that just because something works, doesn't mean it's right or formed correctly...The question I have is how do you determine what requires parentheses and what doesn't in a find command? In OS X, -and is "implied by the juxtaposition of two expressions it does not have to be specified" My goal is to have find: find directories that are over 5 minutes

Quote only the required columns using pandas to_csv

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-10 17:52:10
问题 I need to generate a csv using pandas to_csv function. I tried quote=csv.QUOTE_NONNUMERIC. But for one of the date time column I dont need double quotes. Is there a way to select the columns for which we want double quotes? 回答1: Thanks people. I got the answer so just thought to share. First I got the list of headers to be quoted and looped them something like below: for col in quoteColumnsList: df[col] = '"' + df[col] + '"' Here my quotechar is '"'. Now I used to_csv with quote parameter as

Powershell in a batch file - How do you escape metacharacters?

由 北城以北 提交于 2019-12-09 06:27:40
问题 Running Windows 7, when I copy a file to an external disk, during a routine file backup , I use Powershell v2 (run from a batch file ) to re-create on the copy file all the timestamps of the original file. The following code works successfully in most cases, but not always:- SET file=%1 SET dest=E:\ COPY /V /Y %file% "%dest%" SetLocal EnableDelayedExpansion FOR /F "usebackq delims==" %%A IN ('%file%') DO ( SET fpath=%%~dpA SET fname=%%~nxA ) PowerShell.exe (Get-Item \"%dest%\%fname%\")
订阅 quoting