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Custom events in jQuery?
... best way. I know how to hook up events from the dom elements like 'click' etc, but I'm building a tiny javascript library/plugin to handle some preview functionality.
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Why '&&' and not '&'?
... example where bit-patterns and bitwise operator are used is in Unix/Linux file system permissions.
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Tuples( or arrays ) as Dictionary keys in C#
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from the callee side. In the second case each addition, lookup, removal etc require action on more than one dictionary.
Furthermore, if your composite key require one more (or less) field in future, you will need to change code a significant lot in the second case (nested dictionary) since you h...
Search All Fields In All Tables For A Specific Value (Oracle)
...;
-- Type the data type you are look at (in CAPITAL)
-- VARCHAR2, NUMBER, etc.
v_data_type VARCHAR2(255) :='VARCHAR2';
-- Type the string you are looking at
v_search_string VARCHAR2(4000) :='string to search here...';
BEGIN
FOR t IN (SELECT table_name, column_name FROM all_tab_cols where ow...
How to detect if JavaScript is disabled?
...
... construction of ajaxy-link, setting of "js-enabled" cookie flag, etc..
</script>
<noscript>
<a href="next_page.php?nojs=1">Next Page</a>
</noscript>
Users without js will get the next_page link - you can add parameters here so that you know on the next p...
When use getOne and findOne methods Spring Data JPA
...ockModeType();
Map<String, Object> hints = getQueryHints().withFetchGraphs(em).asMap();
return Optional.ofNullable(type == null ? em.find(domainType, id, hints) : em.find(domainType, id, type, hints));
}
And here em.find() is an EntityManager method declared as :
public <T> ...
right click context menu for datagridview
... a menu pop up. Then i would like to select things such as copy, validate, etc
7 Answers
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Count(*) vs Count(1) - SQL Server
...vers (such as auto-stats, xevent sessions, query store overhead, triggers, etc.). It is maybe a few thousand extra CPU instructions. So, count(1) does a tiny bit less work during compilation (which will usually happen once and the plan is cached across multiple subsequent executions). For executi...
Spring MVC: How to perform validation?
... }
} catch (Exception e) {
log.error("Cannot validate fileds equality in '" + value + "'!", e);
return false;
}
return true;
}
}
@FieldsEquality(firstFieldName = "password", secondFieldName = "confirmPassword")
public class NewUserForm {
pr...
How to measure time taken by a function to execute
...E 10 ++
FireFox 15 ++
Chrome 24 ++
Safari 8 ++
Opera 15 ++
Android 4.4 ++
etc, etc
console.time may be viable for you, but it's non-standard §:
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. The...