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When to use self over $this?
...nse (since Person is a class, not an instance). Therefore, that is a parse error.
:: - scope-resolution-operator - This is always used to access a Class static property or method.
echo Foo::bar()
Additionally, we can call a static method on an object in the same way:
echo $foo::bar()
It's extr...
Move capture in lambda
... better and even more generic solution because the compiler will catch the error.
Emulating generalized lambda capture in C++11
Here's one more idea, on how to implement generalized lambda capture. The use of the function capture() (whose implementation is found further down) is as follows:
#inc...
How to query SOLR for empty fields?
...le of Solr 4.5.1 and ?q=-id:* seems to work as expected. Maybe the parsing error is related to this issue.
– user2043553
Dec 8 '14 at 11:28
...
Formatting numbers (decimal places, thousands separators, etc) with CSS
... && _number > 0 ? String(_number) : ""; or else you will get an error _number.replace is not defined or not a function
– Shalkam
Jul 1 '17 at 15:28
...
ResourceDictionary in a separate assembly
...erControl and in the main window project. Otherwise you'll get the runtime error.
– Andrejs Gasilovs
Jun 12 '17 at 9:31
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Remove all the children DOM elements in div
... Seems to be standard in HTML 5. The above blog entry was user error. developer.mozilla.org/en-US/docs/DOM/element.innerHTML
– svachalek
Dec 5 '12 at 23:49
...
SQL Server Configuration Manager not found
...
If you get an error cannot connect to wmi provider use the workaround from this article (run in cmd with admin rights!): support.microsoft.com/en-us/help/956013/…
– Stalinko
May 24 '18 at 4:55
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Mockito.any() pass Interface with Generics
...
When I tried this, I received an error in my test: You cannot use argument matchers outside of verification or stubbing.
– kevinarpe
Mar 17 '14 at 12:50
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Avoid duplicates in INSERT INTO SELECT query in SQL Server
...t the second time, you will get a
Violation of PRIMARY KEY constraint error
This is the code:
Insert into Table_2
Select distinct *
from Table_1
where table_1.ID >1
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How to check if a variable is null or empty string or all whitespace in JavaScript?
...== null;
}
...then:
var addr = ' ';
if(isEmptyOrSpaces(addr)){
// error
}
* EDIT *
Please note that op specifically states:
I need to check to see if a var is null or has any empty spaces or for that matter just blank.
So while yes, "white space" encompasses more than null, spaces ...