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Is There a Better Way of Checking Nil or Length == 0 of a String in Ruby?
...rried about performance, I'll often use this:
if my_string.to_s == ''
# It's nil or empty
end
There are various variations, of course...
if my_string.to_s.strip.length == 0
# It's nil, empty, or just whitespace
end
...
A valid provisioning profile for this executable was not found for debug mode
...
It could be because your iphone is not recognized by the provisioning portal.
Solution:
1) In Xcode, Goto --> Build --> clean all targets.
2) In "Groups & Files" -->Target --> expand it --> right click y...
Simple way to find if two different lists contain exactly the same elements?
...list1.equals(list2)
From the javadoc:
Compares the specified object with
this list for equality. Returns true
if and only if the specified object is
also a list, both lists have the same
size, and all corresponding pairs of
elements in the two lists are equal.
(Two elements e1 and ...
How to securely save username/password (local)?
...ils consist of username and password, and they need to be saved locally.
It's just a matter of security, so other people using the same computer can't see everyone's personal data.
What is the best/most secure way to save this data?
...
Best Practice - NSError domains and codes for your own project/app
...NS style domain. For example:
NSError * myInternalError = [NSError errorWithDomain:@"com.davedelong.myproject" code:42 userInfo:someUserInfo];
The third part of the domain (@"myproject") is just used to differentiate the errors from this project ("My Project") from errors in another project ("My...
Copy existing project with a new name in Android Studio
...copy my Android project and create a new project from the same files just with a different name. The purpose of this is so I can have a second version of my app which is ad supported in the app store.
...
Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The s
...ver and the mail id you have used both are in different time zone. Choose either of these two solutions:
1) Log in to production server via remote access, and sign in to gmail once with your credentials. They will ask for the confirmation, confirm it and log out.
Or 2) log in gmail to your local c...
jQuery selector regular expressions
...using wildcard or regular expressions (not sure on the exact terminology) with a jQuery selector.
10 Answers
...
Remove querystring from URL
...n easy way to get this is:
function getPathFromUrl(url) {
return url.split("?")[0];
}
For those who also wish to remove the hash (not part of the original question) when no querystring exists, that requires a little bit more:
function stripQueryStringAndHashFromPath(url) {
return url.split("...
How do I do base64 encoding on iOS?
...upport from the iPhone SDK . How can I do base64 encoding and decoding with or without a library?
19 Answers
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