I had this issue and the fix was to make sure in tnsnames.ora the SERVICE_NAME is a valid service name in your database. To find out valid service names, you can use the following query in oracle: Once I updated tnsnames.ora to: then I ran: Success! The listener is basically telling you that whatever service_name … Read more
java is part of the JRE, not the JDK. You need to add the JDK bin to the system PATH, in “Control Panel” | System | Advanced | “Environment Variables”
Check scipy.stats.mode() (inspired by @tom10’s comment): Output: As you can see, it returns both the mode as well as the counts. You can select the modes directly via m[0]: Output:
You can use a link to invoke history.go(-1) in Javascript, which is essentially equivalent to clicking the Back button. Ideally, however, it’d be better to just create a link back to the URL from whence the user was posted to the form – that way the proper “flow” of history is preserved and the user … Read more
The following reads a file passed as an argument line by line: This is the standard form for reading lines from a file in a loop. Explanation: IFS= (or IFS=”) prevents leading/trailing whitespace from being trimmed. -r prevents backslash escapes from being interpreted. Or you can put it in a bash file helper script, example … Read more
Is week1 a submodule? Note the relevant part from the output of the git status command: (commit or discard the untracked or modified content in submodules) Try cd week1 and issuing another git status to see what changes you have made to the week1 submodule. See http://git-scm.com/book/en/Git-Tools-Submodules for more information about how submodules work in … Read more
es, you can. That should work. . = any char except newline \. = the actual dot character .? = .{0,1} = match any char except newline zero or one times .* = .{0,} = match any char except newline zero or more times .+ = .{1,} = match any char except newline one or … Read more
There is strtol which is better IMO. Also I have taken a liking in strtonum, so use it if you have it (but remember it’s not portable): You might also be interested in strtoumax and strtoimax which are standard functions in C99. For example you could say: Anyway, stay away from atoi: The call atoi(str) … Read more
I have a data frame called “newprice” (see below) and I want to change the column names in my program in R. In fact this is what am doing: I have not put this in a loop because I want each column name to be different as you see. When I paste my program into … Read more