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Python Pandas merge only certain columns
...umn 'Unique_External_Users' from df2 to df1 but got an error ... "None of [Index(['U', 'n', 'i', 'q', 'u', 'e', '', 'E', 'x', 't', 'e', 'r', 'n', 'a',\n 'l', '', 'U', 's', 'e', 'r', 's'],\n dtype='object')] are in the [columns]" .
– CoolDocMan
Feb 28...
How and why do I set up a C# build machine? [closed]
...e a look at Redsolo's article on building .net projects using Hudson
Your questions
Q: What kind of tools/licenses will I need? Right now, we use Visual Studio and Smart Assembly to build, and Perforce for source control. Will I need something else, or is there an equivalent of a cron job for run...
Default filter in Django admin
...itle = _('Status')
parameter_name = 'status'
def lookups(self, request, model_admin):
return (
(None, _('Pending')),
('activate', _('Activate')),
('rejected', _('Rejected')),
('all', _('All')),
)
def choices(self, cl):
...
Best practices with STDIN in Ruby?
...le that gets all input from named files or all from STDIN.
ARGF.each_with_index do |line, idx|
print ARGF.filename, ":", idx, ";", line
end
# print all the lines in every file passed via command line that contains login
ARGF.each do |line|
puts line if line =~ /login/
end
Thank goodness ...
std::enable_if to conditionally compile a member function
...r their template arguments happen and SFINAE happens as expected. See this question and the corresponding answer on how to do that.
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How to escape a single quote inside awk
...edited May 21 '15 at 10:39
fedorqui 'SO stop harming'
212k7373 gold badges432432 silver badges485485 bronze badges
answered Mar 28 '12 at 0:31
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Error: free(): invalid next size (fast):
...ny dynamic memory allocation in my program, but I was accessing a vector's index without allocating memory for it.
So, if the same case, better allocate some memory using resize() and then access vector elements.
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Is there anything like inotify on Windows?
...s are probably better if you're building applications like backup tools or indexes that need to monitor entire volumes.
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How can I specify a branch/tag when adding a Git submodule?
...
(Git 2.22, Q2 2019, has introduced git submodule set-branch --branch aBranch -- <submodule_path>)
Note that if you have an existing submodule which isn't tracking a branch yet, then (if you have git 1.8.2+):
Make sure the parent ...
How to count total number of watches on a page?
...angularjs 1.0.5.
$rootScope.countWatchers = function () {
var q = [$rootScope], watchers = 0, scope;
while (q.length > 0) {
scope = q.pop();
if (scope.$$watchers) {
watchers += scope.$$watchers.length;
}
if (scop...