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Checking network connection
...
Perhaps you could use something like this:
import urllib2
def internet_on():
try:
urllib2.urlopen('http://216.58.192.142', timeout=1)
return True
except urllib2.URLError as err:
return False
Currently, 216.58.192.142 is one of the IP addresses for google.com. ...
Turning live() into on() in jQuery
...ould be something like
$(document.body).on('change', 'select[name^="income_type_"]', function() {
alert($(this).val());
});
Although it is better if you bind the event handler as close as possible to the elements, that is, to an element being closer in the hierarchy.
Update: While answering ...
Is an index needed for a primary key in SQLite?
...
It's mention in the sqlite_master table with a name starting with sqlite_autoindex_.
– dan04
Jul 31 '10 at 19:17
2
...
What's the difference between using INDEX vs KEY in MySQL?
... at table info in the latest version of SQLYog it shows KEY keyname (column_name) when I created the table with INDEX keyname (column_name). The fact that it is a synonym explains it perfectly.
– crmpicco
Apr 2 '14 at 10:10
...
Webfonts or Locally loaded fonts?
...e file size logic is also, I believe, why Font Squirrel tries them in that order. But that is mostly speculation on my part.
If you're working in an environment where every request and byte counts, you'll have to do some profiling to find out which works best for your use case. Will people be only ...
Rails 3 check if attribute changed
...mentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
share
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Jasmine.js comparing arrays
... edited May 16 '15 at 20:01
d-_-b
17.7k2929 gold badges113113 silver badges192192 bronze badges
answered Mar 30 '13 at 11:25
...
C/C++ NaN constant (literal)?
...
In C, NAN is declared in <math.h>.
In C++, std::numeric_limits<double>::quiet_NaN() is declared in <limits>.
But for checking whether a value is NaN, you can't compare it with another NaN value. Instead use isnan() from <math.h> in C, or std::isnan() from <c...
Export from sqlite to csv using shell script
...out out.csv has been forgotten.
Try:
#!/bin/bash
./bin/sqlite3 ./sys/xserve_sqlite.db <<!
.headers on
.mode csv
.output out.csv
select * from eS1100_sensor_results;
!
instead.
sh/bash methods
You can either call your script with a redirection:
$ your_script >out.csv
or you can insert the ...
Eclipse Android and gitignore
...
There are file types to ignore
# built application files
*.apk
*.ap_
# files for the dex VM
*.dex
# Java class files
*.class
# generated files
bin/
gen/
# Local configuration file (sdk path, etc)
local.properties
# Eclipse project files
.classpath
.project
# Proguard folder generated b...