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How to declare variable and use it in the same Oracle SQL script?
...nd variable. The mechanism for assigning values to a VAR is with an EXEC call:
SQL> var name varchar2(20)
SQL> exec :name := 'SALES'
PL/SQL procedure successfully completed.
SQL> select * from dept
2 where dname = :name
3 /
DEPTNO DNAME LOC
---------- -------------- ...
How to get a subset of a javascript object's properties
...og(picked); // { a: 5, c: 7 }
From Philipp Kewisch:
This is really just an anonymous function being called instantly. All of this can be found on the Destructuring Assignment page on MDN. Here is an expanded form
let unwrap = ({a, c}) => ({a, c});
let unwrap2 = function({a, ...
Searching subversion history (full text)
... a way to perform a full text search of a subversion repository, including all the history?
16 Answers
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Insert into a MySQL table or update if exists
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I know all of you allude to this, but I want to be explicit for others. If the ID you insert is NOT the PRIMARY KEY or UNIQUE, then this will not work. This didn't initially work for me because my ID was not unique.
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In java how to get substring from a string till a character c?
I have a string (which is basically a file name following a naming convention) abc.def.ghi
9 Answers
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What is the difference between typeof and instanceof and when should one be used vs. the other?
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@Luke generally a bad idea to use "new String" like this. that creates a "string object" rather than a string primitive. see section here developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Colin D
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how to remove untracked files in Git?
...y files, that you havn't thought of at first. Please double check and read all the comments below this answer and the --help section, etc., so to know all details to fine-tune your commands and surely get the expected result.
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How to add “active” class to Html.ActionLink in ASP.NET MVC
...ges, it would be smart to have a way to apply that selected class automatically based on the current page rather than copy the menu multiple times and do it manually.
The easiest way is to simply use the values contained in ViewContext.RouteData, namely the Action and Controller values. We could b...
Is there a way to dump a stack trace without throwing an exception in java?
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You can also try Thread.getAllStackTraces() to get a map of stack traces for all the threads that are alive.
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SQL (MySQL) vs NoSQL (CouchDB) [closed]
...e
responsible for a lot of work that the
system takes care of automatically in
a relational database system. Similar
to what happens when you pick manual
over automatic transmission. Secondly,
NoSQL allows you to eke more
performance out of the system by
eliminating a lot of integrit...