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How can I check if string contains characters & whitespace, not just whitespace?
...g to see if there's only whitespace, just check to see if there's at least one character of non whitespace:
if (/\S/.test(myString)) {
// string is not empty and not just whitespace
}
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Is there an XSLT name-of element?
...refore, in situations where a name may belong to two different namespaces, one must use the name() function in order for these names to be still distinguished.
And, BTW, it is possible to specify both functions without any argument:
name() is an abbreviation for name(.)
local-name() is an abbrev...
Global access to Rake DSL methods is deprecated
... I don’t think it’s good to deliberately use old libraries, when newer one can be made to work, seeing comment below.
– Smar
Jun 11 '11 at 19:52
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How does Chrome's “Request Desktop Site” option work?
... Chrome/18.0.1025.45 Safari/535.19
Notice the word "Mobile' in the first one, and also the mention of Android system and device. Checking these, I see that it also provides false information - namely X11 and x86_64 - to closely match the value sent by the Desktop Linux version of Chrome.
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Jackson: how to prevent field serialization
...hacking the annotations on both accessors and keeps all the information in one place:
public class User {
@JsonProperty(access = JsonProperty.Access.WRITE_ONLY)
private String password;
}
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ping response “Request timed out.” vs “Destination Host unreachable”
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Destination Host Unreachable
This message indicates one of two problems: either the local system has no route to the desired destination, or a remote router reports that it has no route to the destination.
If the message is simply "Destination Host Unreachable," then there is...
Subtract two variables in Bash
...For simple integer arithmetic, you can also use the builtin let command.
ONE=1
TWO=2
let "THREE = $ONE + $TWO"
echo $THREE
3
For more info on let, look here.
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Intermittent log4net RollingFileAppender locked file issue
...efault behavior, which acquires and holds onto the lock for a long time).
One implication of the default behavior is that if you're using it under a Web site that is being executed under multiple worker processes running on the same machine, each one will try to acquire and hold onto that lock inde...
How do you parse and process HTML/XML in PHP?
How can one parse HTML/XML and extract information from it?
30 Answers
30
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Difference between viewDidLoad and viewDidAppear
...ut while viewDidLoad is generally only called once and only once, there is one situation where it may be called again. Specifically, if you ever receive a didReceiveMemoryWarning, your non-visible views may be released (though the view controllers are untouched) and when you return back, viewDidLoad...