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Shared-memory objects in multiprocessing
...r array), place that in shared memory, wrap it with multiprocessing.Array, and pass that to your functions. This answer shows how to do that.
If you want a writeable shared object, then you will need to wrap it with some kind of synchronization or locking. multiprocessing provides two methods of do...
Programmatically change the src of an img tag
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@william44isme and our page will be loaded slower than before. i think the jQuery is useful just for websites that uses a same code, very more. for example if we use the above code more than 30 or 50 times. so it's necessary to use jQuery
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How do I delete rows in a data frame?
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The key idea is you form a set of the rows you want to remove, and keep the complement of that set.
In R, the complement of a set is given by the '-' operator.
So, assuming the data.frame is called myData:
myData[-c(2, 4, 6), ] # notice the -
Of course, don't forget to "reassign" ...
Get records with max value for each group of grouped SQL results
...alue for.
You avoid complicated subqueries that try to find the max() etc, and also the problems of returning multiple rows when there are more than one with the same maximum value (as the other answers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL synta...
How to Set focus to first text input in a bootstrap modal after shown
I load a dynamic bootstrap modal and it contains few text inputs. The issue i face that i want the cursor to focus on the first input in this modal, and this is not happening by default.
So i wrote this code to do it:
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How to dynamically insert a tag via jQuery after page load?
...ng problems getting this to work. I first tried setting my script tags as strings and then using jquery replaceWith() to add them to the document after page load:
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How do I use Django templates without the rest of Django?
...from django.conf import settings
settings.configure(DEBUG=False)
template_string = "Hello {{ name }}"
template = Template(template_string, engine=Engine())
context = Context({"name": "world"})
output = template.render(context) #"hello world"
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Android basics: running code in the UI thread
...nLooper());
private class TextViewUpdater implements Runnable{
private String txt;
@Override
public void run() {
searchResultTextView.setText(txt);
}
public void setText(String txt){
this.txt = txt;
}
}
It can be used from anywhere like this:
textViewUpdat...
Convert datetime to Unix timestamp and convert it back in python
... %s does not work on Windows systems (ValueError: Invalid format string)
– chrki
May 3 '17 at 8:13
1
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Android LinearLayout Gradient Background
....xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="50dip"
android:orientation="horizontal"
android:background="@drawable/main_header_selector">
&l...