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Javascript shorthand ternary operator
... Isn't this idiom an anti-pattern? What if you pass 0 or empty string, the 'OR' expression will skip it and use the default value where you actually wanted 0 or empty string.
– Paul Trzyna
Jun 29 '18 at 13:25
...
How to add a second css class with a conditional value in razor MVC 4
...
You can add property to your model as follows:
public string DetailsClass { get { return Details.Count > 0 ? "show" : "hide" } }
and then your view will be simpler and will contain no logic at all:
<div class="details @Model.DetailsClass"/>
This will work even ...
How to detect my browser version and operating system using JavaScript?
...gt.indexOf("Opera"))!=-1) {
browserName = "Opera";
fullVersion = nAgt.substring(verOffset+6);
if ((verOffset=nAgt.indexOf("Version"))!=-1)
fullVersion = nAgt.substring(verOffset+8);
}
// In MSIE, the true version is after "MSIE" in userAgent
else if ((verOffset=nAgt.indexOf("MSIE"))!=-1) {
b...
Is there a stopwatch in Java?
...TimeUnit.MILLISECONDS);
log.info("that took: " + stopwatch); // formatted string like "12.3 ms"
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Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
...oading. E.g. if you have this entity:
public class MemberLoan
{
public string LoandProviderCode { get; set; }
public virtual Membership Membership { get; set; }
}
Entity Framework will return proxy inherited from this entity and provide DbContext instance to this proxy in order to allow laz...
When should one use RxJava Observable and when simple Callback on Android?
...r:
inputObservable.debounce(1, TimeUnit.SECONDS).subscribe(new Action1<String>() {
@Override
public void call(String s) {
// use Retrofit to create autocompletedata
}
});
I won't create the Callback variant but you will understand ...
Exporting a function in shell
...
Functions are not exportable by nature. However you can export strings, so I have a little trick here:
func="$(typeset -f funcname)"
export func
To import the function, re-define it from the exported string:
# in subshell
eval "$func"
...
NameValueCollection vs Dictionary [duplicate]
...
NameValueCollection is string typed whereas Dictionary leverages generics to allow type variance. See Benefits of Generics.
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Order a MySQL table by two columns
...t`,
`date` AS `date`,
MATCH (`text`) AGAINST (:string) AS `match`
FROM int_art_fulltext
WHERE MATCH (`text`) AGAINST (:string IN BOOLEAN MODE)
LIMIT 0,101
) t,
(
SELECT @row := 0
) r
ORD...
How to retrieve a module's path?
...(__file__) can also be tricky. At least on my system, it returns an empty string if you call it from the same directory as the file. ex.
# foo.py
import os
print '__file__ is:', __file__
print 'os.path.dirname(__file__) is:', os.path.dirname(__file__)
will output:
__file__ is: foo.py
os.path.d...