syntax-error

I recently ran into an oddity while looking at some Ruby code from the Rails docs . Ruby lets you pass arguments like these examples: redirect_to post_url(@post), alert: "Watch it, mister!" redirect_to({ action: 'atom' }, alert: "Something serious happened") But that second case looked odd to me. It seems like you should be able to pass it like so: redirect_to { action: 'atom' }, alert: "Something serious happened" And it would have the same meaning with or without parenthesis. But instead you get: syntax error, unexpected ':', expecting '}' Referring to the colon after action . I'm not sure

I have pandas DataFrame named 'dataset' and it contains a column named 'class' when I execute the following line I get SyntaxError: invalid syntax print("Unique values in the Class column:", dataset.class.unique()) It works for another column names but not working with 'class' How to use a keyword as column name in pandas ? class is a keyword in python. A rule of thumb: whenever you're dealing with column names that cannot be used as valid variable names in python, you must use the bracket notation to access: dataset['class'].unique() . There are, of course, exceptions here, but they work

I'm getting a syntax error while following the MySQL guide for IF syntax. My query is: if 0=0 then select 'hello world'; end if; Logically, this should select 'hello world' , but instead I get ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'if (0=0) then select 'hello world'' at line 1 ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'end if' at line 1 Your query is only valid in a

I try to validate my HTML code and I have found this warning: Empty heading. See here Obviously the heading is not empty. The content of the <h3></h3> is generated, in WordPress, by the_title() function. So, I don't understand why is this happen.. Somebody can explain me what is the problem? Thanks! lonesomeday First off, the HTML is valid. It passes the W3C check, so you don't need to worry too much. With that said, your code is misusing HTML syntax. The "empty heading" warning means that you have a heading tag ( <hN> ) that doesn't have any content associated with it. Heading tags are

I keep getting this error (Javascript error; Uncaught SyntaxError: missing ) after argument list) when trying to call a simple function. Everything works without calling it in a function but I need to do it multiple times. function myFunction(ip, port, div) { $.get('http://mcping.net/api/'+ ip + ":" + port, function(data){ console.log(data.online); $(div).html(data.online); }); } myFunction(162.223.8.210, 25567, #factionsOnline) You're missing a parentheses because you didn't quote your strings myFunction('162.223.8.210', '25567', '#factionsOnline'); 来源： https://stackoverflow.com/questions

r'\' in Python does not work as expected. Instead of returning a string with one character (a backslash) in it, it raises a SyntaxError. r"\" does the same. This is rather cumbersome if you have a list of Windows paths like these: paths = [ r'\bla\foo\bar', r'\bla\foo\bloh', r'\buff', r'\', # ... ] Is there a good reason why this literal is not accepted? This is in accordance with the documentation : When an 'r' or 'R' prefix is present, a character following a backslash is included in the string without change, and all backslashes are left in the string. For example, the string literal r"\n"

I have done some debugging on my sql and I cant figure out the maddening error I am getting I have narrowed it down to a couple of lines which I cant see what the problem is, please someone give me some assistance. I get this error I am here2 Msg 102, Level 15, State 1, Line 1 Incorrect syntax near ']'. I am here3 Print 'I am here2' SET IDENTITY_INSERT c365online_script1.dbo.tCompany ON declare @cols2 varchar(max) select @cols2 = (Select Stuff((Select '],[' + C.COLUMN_NAME From INFORMATION_SCHEMA.COLUMNS As C Where C.TABLE_SCHEMA = T.TABLE_SCHEMA And C.TABLE_NAME = T.TABLE_NAME Order By C

case in bash: line 4: syntax error near unexpected token `)' I'm trying to use the command case in Bash (on my Raspberry Pi again), but when I run my script, Bash spits out errors. I've read over many tutorials and I think I'm doing the same thing as them, but something's just not right. Here's my code: #!/bin/bash case "$1" in help) echo "You asked for help. Sorry, I'm busy." *) echo "You didn't say anything. Try 'help' as the first argument." esac Here's the output (the filename is newmkdir and I ran it with no arguments): ./newmkdir: line 4: syntax error near unexpected token `)' ./newmkdir