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Random row selection in Pandas dataframe
... Thanks @eumiro. I also worked out that df.ix[np.random.random_integers(0, len(df), 10)] would also work.
– John
Apr 10 '13 at 10:58
7
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UITableViewHeaderFooterView: Unable to change background color
...FooterViewReuseIdentifier: "header")
Load with:
override func tableView(_ tableView: UITableView,
viewForHeaderInSection section: Int) -> UIView? {
if let header =
tableView.dequeueReusableHeaderFooterView(withIdentifier: "header") {
let backgroundVi...
How to move all files including hidden files into parent directory via *
...ould cause mv below to match hidden files
mv /path/subfolder/* /path/
In order to turn off dotglob, you'd need to say:
shopt -u dotglob
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What is lexical scope?
...ipt our choices for scoping are:
as-is (no scope adjustment)
lexical var _this = this; function callback(){ console.log(_this); }
bound callback.bind(this)
It's worth noting, I think, that JavaScript doesn't really have dynamic scoping. .bind adjusts the this keyword, and that's close, but not t...
How to do URL decoding in Java?
... {
String result = java.net.URLDecoder.decode(url, StandardCharsets.UTF_8.name());
} catch (UnsupportedEncodingException e) {
// not going to happen - value came from JDK's own StandardCharsets
}
Java 10 added direct support for Charset to the API, meaning there's no need to catch Unsuppor...
Conversion of a datetime2 data type to a datetime data type results out-of-range value
...Type object for the DataColumn constructor is the typeof keyword, which is orders of magnitude faster.
Therefore, to create the column, you should write
new DataColumn("myDate", typeof(DateTime))
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Form onSubmit determine which submit button was pressed [duplicate]
...the browser will
// automatically choose the first in source-order
// so we do the same here
submitActor = $submitActors[0];
}
console.log(submitActor.name);
// alert(submitActor.name);
return false;
});
...
What are some uses of decltype(auto)?
...p;&
auto x6a = { 1, 2 }; // decltype(x6a) is std::initializer_list<int>
decltype(auto) x6d = { 1, 2 }; // error, { 1, 2 } is not an expression
auto *x7a = &i; // decltype(x7a) is int*
decltype(auto)*x7d = &i; // error, declared type is not plain declt...
Check if SQL Connection is Open or Closed
... as an enum and not turn it into a string.....
– marc_s
Aug 4 '11 at 15:19
4
Should've added usin...
How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
...gular expressions' is checked, and put the following as the text to find:
_platformActions.InstallApp\((.+)\)
And the following as the text to replace it with:
this.Platform().App($1).Install()
Note: As SLaks points out in a comment below, the change in regex syntax is due to VS2012 switching to...