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How does HTTP file upload work?
...?) always threaded so that they can handle concurrent connections. Essentially, the daemon process that's listening on port 80 immediately hands off the task of serving to another thread/process in order that it can return to listening for another connection; even if two incoming connections arrive...
How to declare a variable in a PostgreSQL query
...WITH () query which can work as a variable, or even tuple of variables. It allows you to return a table of temporary values.
WITH master_user AS (
SELECT
login,
registration_date
FROM users
WHERE ...
)
SELECT *
FROM users
WHERE master_login = (SELECT login
...
Good tutorials on XMPP? [closed]
...Library from Ignite Realtime and used the groovy language with a buch of small scripts to learn the basics.
Later i developed a plugin for the OpenFire XMPP Server. There are some tutorials and a forum on their site as well. I think that both the smack and the openfire api's are easy to learn.
I...
Dialog to pick image from gallery or from camera
Is there a standard way to call dialog box with choose either to pick an image from the camera or to get from gallery (like in build-in phone book or Skype)?
...
Why does InetAddress.isReachable return false, when I can ping the IP address?
...e and capable of resolving external hosts (i.e. google.com) ... Which generally seems to work on *NIX machines.
The issue
There is alot of chatter about this :
Here are other, similar questions :
Detect internet Connection using Java
How do I test the availability of the internet in Java?...
Does Entity Framework Code First support stored procedures?
...
Collin K
14k11 gold badge2323 silver badges2020 bronze badges
answered Jan 31 '11 at 2:40
divegadivega
5...
How to form tuple column from two columns in Pandas
...0.154816 0.617671 -0.090484 -0.191906
6 -0.705177 -1.086138 -0.629708 1.332853
7 0.637496 -0.643773 -0.492668 -0.777344
8 1.109497 -0.610165 0.260325 2.533383
9 -1.224584 0.117668 1.304369 -0.152561
In [11]: df['lat_long'] = df[['lat', 'long']].apply(tuple, axis=1)
In [12]: df
Out[12]:
...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
... deployed with this application
That URI is for JSTL 1.0, but you're actually using JSTL 1.2 which uses URIs with an additional /jsp path (because JSTL, who invented EL expressions, was since version 1.1 integrated as part of JSP in order to share/reuse the EL logic in plain JSP too).
So, fix the...
Counting the occurrences / frequency of array elements
...be faster than creating an associative array.
– quant_dev
Sep 29 '17 at 20:24
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show 1 more comment
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How can I embed a YouTube video on GitHub wiki pages?
...R If you want to give readers a visual cue that the image/thumbnail is actually a playable video, take your own screenshot of the video in YouTube and use that as the thumbnail instead.
Example using Screenshot with Video Controls as Visual Cue:
Code:
[![Everything Is AWESOME](http://i.imgur.com/Ot...