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How can I clear an HTML file input with JavaScript?
...e mechanism for clearing already selecting output. I tried using an empty string but it did not work in all browsers, NULL worked in all the browsers I tried (Opera, Chrome, FF, IE11+ and Safari).
EDIT:
Please note that setting to NULL works on all browsers while setting to an empty string did not...
Sort Go map values by keys
...rt"
)
func main() {
// To create a map as input
m := make(map[int]string)
m[1] = "a"
m[2] = "c"
m[0] = "b"
// To store the keys in slice in sorted order
keys := make([]int, len(m))
i := 0
for k := range m {
keys[i] = k
i++
}
sort.Ints(key...
SQLAlchemy: cascade delete
...ship("Child", cascade="all,delete", backref="parent")
(note "Child" as a string: this is allowed when using the declarative style, so that you are able to refer to a class that is not yet defined)
You might want to add delete-orphan as well (delete causes children to be deleted when the parent ge...
Add querystring parameters to link_to
I'm having difficultly adding querystring parameters to link_to UrlHelper. I have an Index view, for example, that has UI elements for sorting, filtering, and pagination (via will_paginate). The will_paginate plugin manages the intra-page persistence of querystring parameters correctly.
...
Filtering a list of strings based on contents
Given the list ['a','ab','abc','bac'] , I want to compute a list with strings that have 'ab' in them. I.e. the result is ['ab','abc'] . How can this be done in Python?
...
How do I force files to open in the browser instead of downloading (PDF)?
... don't want the browser to prompt the user then use "inline" for the third string instead of "attachment". Inline works very well. The PDF display immediately without asking the user to click on Open. I've used "attachment" and this will prompt the user for Open, Save. I've tried to change the bro...
Pandas aggregate count distinct
...
Just adding to the answers already given, the solution using the string "nunique" seems much faster, tested here on ~21M rows dataframe, then grouped to ~2M
%time _=g.agg({"id": lambda x: x.nunique()})
CPU times: user 3min 3s, sys: 2.94 s, total: 3min 6s
Wall time: 3min 20s
%time _=g.ag...
Get the IP address of the remote host
...osted) or self-hosted. The code below shows how this can be done.
private string GetClientIp(HttpRequestMessage request)
{
if (request.Properties.ContainsKey("MS_HttpContext"))
{
return ((HttpContextWrapper)request.Properties["MS_HttpContext"]).Request.UserHostAddress;
}
if...
runOnUiThread in fragment
...t hour_sdf = new SimpleDateFormat("HH:mm a");
String currentDate = date_sdf.format(currentTime);
String currentHour = hour_sdf.format(currentTime);
dateTextView.setText(currentDate);
hou...
Scala 2.8 breakOut
... breakOut? Consider the example given for the question, You take a list of strings, transform each string into a tuple (Int, String), and then produce a Map out of it. The most obvious way to do that would produce an intermediary List[(Int, String)] collection, and then convert it.
Given that map u...