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Rails: Why does find(id) raise an exception in rails? [duplicate]
...elper code which conditionally generates the Previous Post/Next Post links from having to handle the RecordNotFound exception, which would be bad because it would be using an exception for control flow.
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Why doesn't Haskell's Prelude.read return a Maybe?
... good news is that folks were sufficiently convinced to start moving away from fail in the libraries. The bad news is that the proposal got lost in the shuffle. There should be such a function, although one is easy to write (and there are zillions of very similar versions floating around many codeb...
WebView link click open default browser
...Overflow that I want to share here in case someone else needs it.
Source (from sven)
webView.setWebViewClient(new WebViewClient(){
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url != null && (url.startsWith("http://") || url.startsWith("https://"))) {...
Using variables inside a bash heredoc
...ost.
local=$(uname)
ssh -t remote <<:
echo "$local is the value from the host which ran the ssh command"
# Prevent here doc from expanding locally; remote won't see backslash
remote=\$(uname)
# Same here
echo "\$remote is the value from the host we ssh:ed to"
:
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Saving images in Python at a very high quality
... elevation_angle is a number (in degrees) specifying the polar angle (down from vertical z axis) and the azimuthal_angle specifies the azimuthal angle (around the z axis).
I find that it is easiest to determine these values by first plotting the image and then rotating it and watching the current v...
How to check a checkbox in capybara?
...s cleaner. Interestingly though, the accepted answer isn't much different from how the check method is implemented in Capybara. def check(locator, options={}) find(:checkbox, locator, options).set(true) end
– bigtunacan
Jun 12 '15 at 15:04
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How do I view all commits for a specific day?
I've already looked at the relevant docs from git-scm.com and gitref.org , but I can't seem to figure this out.
5 Answe...
How to get a complete list of object's methods and attributes?
...(), look for __class__, and then to go for its __bases__:
# code borrowed from the rlcompleter module
# tested under Python 2.6 ( sys.version = '2.6.5 (r265:79063, Apr 16 2010, 13:09:56) \n[GCC 4.4.3]' )
# or: from rlcompleter import get_class_members
def get_class_members(klass):
ret = dir(kl...
Synchronise ScrollView scroll positions - android
...the starting position and the last position. Say for ex- I start the fling from Y=10 and leave at Y=30 and then fling velocity takes it to Y = 50 and then stops. So onscrollchanged only registers-perhaps 10, 11, 12..30 and then 49, 50.How can I make it register all the intermediate locations as well...
Python 2.7 getting user input and manipulating as string without quotations
I want to get a string from a user, and then to manipulate it.
8 Answers
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