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.NET unique object identifier
...e cost, but such a thing could be helpful if one compares two distinct immutable objects and finds them equal; if one when possible overwrites the reference to the newer one with a reference to the older one, one can avoid having many redundant references to identical but distinct objects.
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How to check if a variable is set in Bash?
... This answer is very confusing. Any practical examples on how to use this table?
– Ben Davis
Sep 27 '14 at 17:16
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jQuery remove options from select
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if your dropdown is in a table and you do not have id for it then you can use the following jquery:
var select_object = purchasing_table.rows[row_index].cells[cell_index].childNodes[1];
$(select_object).find('option[value='+site_name+']').remove();
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How can I verify if one list is a subset of another?
...ists be the same for many tests? It does as one of them is a static lookup table 2.Does it need to be a list? It does not - the static lookup table can be anything that performs best. The dynamic one is a dict from which we extract the keys to perform a static lookup on. Will this fact alter the so...
How can I avoid Java code in JSP files, using JSP 2?
...fway, all you get is a blank page.
Testability: scriptlets are not unit-testable.
Maintainability: per saldo more time is needed to maintain mingled/cluttered/duplicated code logic.
Sun Oracle itself also recommends in the JSP coding conventions to avoid use of scriptlets whenever the same functio...
Multiple queries executed in java in single statement
... it is possible to execute something like this using JDBC.
"SELECT FROM * TABLE;INSERT INTO TABLE;"
Yes it is possible. There are two ways, as far as I know. They are
By setting database connection property to allow multiple queries,
separated by a semi-colon by default.
By calling a stored pro...
UnmodifiableMap (Java Collections) vs ImmutableMap (Google) [duplicate]
...odifiableMap.get("E"); // Will return "F".
In contrast to that, the ImmutableMap of Guava is really immutable: It is a true copy of a given map, and nobody may modify this ImmutableMap in any way.
Update:
As pointed out in a comment, an immutable map can also be created with the standard API ...
How to check if a String contains another String in a case insensitive manner in Java?
...2446 ms
Regexp: 7180 ms
Regexp with cached Pattern: 1845 ms
Results in a table:
RELATIVE SPEED 1/RELATIVE SPEED
METHOD EXEC TIME TO SLOWEST TO FASTEST (#1)
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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...nd it tells if the parent is removed, all its related records in the child table should be removed.
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Remove data.frame row names when using xtable
...and I assume it's quite easy too. I'm writing a report and I want to use xtable package for LaTeX table generation (note that memisc package does the job, but say I want to do this solely with xtable ).
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