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Compare two DataFrames and output their differences side-by-side
... in the score column):
import sys
if sys.version_info[0] < 3:
from StringIO import StringIO
else:
from io import StringIO
DF1 = StringIO("""id Name score isEnrolled Comment
111 Jack 2.17 True "He was late to class"
...
How do you copy the contents of an array to a std::vector in C++ without looping?
...ven when a function expects c-style arrays you can use vectors:
vector<char> v(50); // Ensure there's enough space
strcpy(&v[0], "prefer vectors to c arrays");
Hope that helps someone out there!
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What is a regular expression which will match a valid domain name without a subdomain?
...specs, your specs are wrong. g.co is a valid domain name but g is only one character.
– sch
Apr 24 '12 at 22:23
3
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Defining and using a variable in batch file
...e referenced with %location %. If that’s not what you want, remove the extra space(s) in the definition.
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Run Java Code Online [closed]
...ne is the best site for the online code running, debugging and it provides extra performance stats also.
Without Sign Up, you can run code upto of maximum 5 sec, and for signup, upto a max of 15 sec. And for Signup, the code management and history is also too good.
However, it has some maximum am...
Detect if an element is visible with jQuery [duplicate]
...l Irish at Google, we identified some cases where we could skip a bunch of extra work when custom selectors like :visible are used many times in the same document. That particular case is up to 17 times faster now!
Keep in mind that even with this improvement, selectors like :visible and :hidden can...
How do I make a list of data frames?
...f data frames here are three good choices:
# base option - slower but not extra dependencies
big_data = do.call(what = rbind, args = df_list)
# data table and dplyr have nice functions for this that
# - are much faster
# - add id columns to identify the source
# - fill in missing values if some...
Vim: Creating parent directories on save
...feedback. I don't want to solve problems I don't have. I never use special chars (i.e. spaces) on my folders, so %:p:h does just fine for me. I never source vimrc (I kill and reopen vim instead) and I don't even know what pseudofiles are. redraw! doesn't seem to do anything at all to me. But I like ...
How do I show the schema of a table in a MySQL database?
...-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------+-------------+------+-----+---------+-------+
| id | int(10) | NO | PRI | NULL | |
| name | varchar(20) | YES | | NULL | |
| age | int(10) | YES | | NUL...
Draw in Canvas by finger, Android
...nClick(DialogInterface dialog, int whichButton) {
String name= input.getText().toString();
Bitmap bitmap = mv.getDrawingCache();
String path = Environment.getExternalStorageDirectory().getAbsolutePath();
...