大约有 13,000 项符合查询结果（耗时：0.0299秒） [XML]
Rails: What's a good way to validate links (URLs)?
... URL. Also note that .foo is now a valid TLD. iana.org/domains/root/db/foo.html
– Simone Carletti
Jan 23 '15 at 9:12
1
...
Objective-C: Where to remove observer for NSNotification?
...ee this discsussion: cocoabuilder.com/archive/cocoa/311831-arc-and-dealloc.html
– MobileMon
Jun 27 '13 at 19:54
3
...
What is a good Hash Function?
...Hsieh is the best I've ever used.
http://www.azillionmonkeys.com/qed/hash.html
If you care about cryptographically secure or anything else more advanced, then YMMV. If you just want a kick ass general purpose hash function for a hash table lookup, then this is what you're looking for.
...
How to get a substring of text?
...runcate:
http://api.rubyonrails.org/classes/ActionView/Helpers/TextHelper.html#method-i-truncate
Example:
truncate(@text, :length => 17)
Excerpt is nice to know too, it lets you display an excerpt of a text Like so:
excerpt('This is an example', 'an', :radius => 5)
# => ...s is an ...
How do I parse command line arguments in Java?
...oll your own:
http://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html
For instance, this is how you use commons-cli to parse 2 string arguments:
import org.apache.commons.cli.*;
public class Main {
public static void main(String[] args) throws Exception {
Options optio...
Sending data back to the Main Activity in Android
...le of this here:
http://developer.android.com/training/notepad/notepad-ex2.html
and in the "Returning a Result from a Screen" of this:
http://developer.android.com/guide/faq/commontasks.html#opennewscreen
share
|
...
Replace one character with another in Bash
...o/ /.}
# replace all blanks
bar=${foo// /.}
See http://tldp.org/LDP/abs/html/string-manipulation.html for more details.
share
|
improve this answer
|
follow
...
Is there a better way to write this null check, and a non-empty check, in groovy?
...e above. It works since Groovy 1.8.1 http://docs.groovy-lang.org/docs/next/html/groovy-jdk/java/util/Collection.html#find(). Examples:
def lst1 = []
assert !lst1.find()
def lst2 = [null]
assert !lst2.find()
def lst3 = [null,2,null]
assert lst3.find()
def lst4 = [null,null,null]
assert !lst4.find...
How do I forward parameters to other command in bash script?
... with a test script demonstrating the difference is here: tldp.org/LDP/abs/html/internalvariables.html#APPREF
– Cascabel
Oct 8 '09 at 14:43
2
...
Capture key press (or keydown) event on DIV element
...
tabindex HTML attribute indicates if its element can be focused, and if/where it participates in sequential keyboard navigation (usually with the Tab key). Read MDN Web Docs for full reference.
Using Jquery
$( "#division" ).keydow...