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Filter dataframe rows if value in column is in a set list of values [duplicate]
...e a list of exact matches, but if you have a list of partial matches or substrings to look for, you can filter using the str.contains method and regular expressions.
For example, if we want to return a DataFrame where all of the stock IDs which begin with '600' and then are followed by any three di...
Iterate over a list of files with spaces
...hat you can use $'\0' to create NULs - you can't: a \0 in an ANSI C-quoted string effectively terminates the string, so that -d $'\0' is effectively the same as -d ''.
– mklement0
Apr 2 '16 at 17:36
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Find substring in the string in TWIG
I want to find substring of the string or check if there is no such substring using Twig. On the words, I need analogue of 'strstr' or 'strpos' in php.
I googled and searched this issue in stackoverflow but nothing found. Does someone know how to solve this problem?
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Iterating over every two elements in a list
...works on sequences, the function works on any iterable; and this uses O(N) extra space, the function doesn't; on the other hand, this is generally faster. There are good reasons to pick one or the other; being afraid of import is not one of them.
– abarnert
Aug...
find filenames NOT ending in specific extensions on Unix?
...$" is a delimiter control character that tells the shell that the filename string ends with ".dll"
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How do I use CSS in Django?
...DIRS tuple in settings.py to give me this:
STATICFILES_DIRS = (
# Put strings here, like "/home/html/static" or "C:/www/django/static".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
os.path.join(os.path.dirname(__file__),'me...
Improve INSERT-per-second performance of SQLite
...NSIENT for those inserts.
SQLITE_TRANSIENT will cause SQLite to copy the string data before returning.
SQLITE_STATIC tells it that the memory address you gave it will be valid until the query has been performed (which in this loop is always the case). This will save you several allocate, copy an...
read.csv warning 'EOF within quoted string' prevents complete reading of file
...ns.CSV", quote = "",
row.names = NULL,
stringsAsFactors = FALSE)
str(cit)
## 'data.frame': 112543 obs. of 13 variables:
## $ row.names : chr "10.2307/675394" "10.2307/30007362" "10.2307/4254931" "10.2307/20537934" ...
## $ id : chr "10.2307/6...
JavaScript post request like a form submit
...pecified url from a form. this will change the window location.
* @param {string} path the path to send the post request to
* @param {object} params the paramiters to add to the url
* @param {string} [method=post] the method to use on the form
*/
function post(path, params, method='post') {
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get path for my .exe [duplicate]
...
In a Windows Forms project:
For the full path (filename included): string exePath = Application.ExecutablePath;
For the path only: string appPath = Application.StartupPath;
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