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Reset the database (purge all), then seed a database
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280
I use rake db:reset which drops and then recreates the database and includes your seeds.rb file....
fork() branches more than expected?
...llykwallyk
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12
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Convert SVG to image (JPEG, PNG, etc.) in the browser
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250
Here is how you can do it through JavaScript:
Use the canvg JavaScript library to render the S...
Executing an EXE file using a PowerShell script
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answered Jan 9 '11 at 16:05
Tomas PanikTomas Panik
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What is the difference between 'log' and 'symlog'?
...de
pyplot.ion()
# Draw the grid lines
pyplot.grid(True)
# Numbers from -50 to 50, with 0.1 as step
xdomain = numpy.arange(-50,50, 0.1)
# Plots a simple linear function 'f(x) = x'
pyplot.plot(xdomain, xdomain)
# Plots 'sin(x)'
pyplot.plot(xdomain, numpy.sin(xdomain))
# 'linear' is the default mod...
Get all child views inside LinearLayout at once
...earLayout ll = …
final int childCount = ll.getChildCount();
for (int i = 0; i < childCount; i++) {
View v = ll.getChildAt(i);
// Do something with v.
// …
}
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How to add multi line comments in makefiles
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answered Dec 20 '10 at 20:10
Eric MelskiEric Melski
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How to get commit history for just one branch?
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Adam Rosenfield
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answered Jun 7 '13 at 0:06
alexalex
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How do I force a UITextView to scroll to the top every time I change the text?
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edited Jul 17 '18 at 15:06
keeshux
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answered Apr 1 '10 at 3:02
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Determining whether jQuery has not found any element
...t').length is what you're looking for. (If it finds nothing, this will === 0.) So your conditional statement should probably be:
if($('#id').length) { /* code if found */ } else { /* code if not found */ }
You're getting an object returned from that alert because jQuery (almost) always returns the...