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Apply a function to every row of a matrix or a data frame
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Only using @JsonIgnore during serialization, but not deserialization
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In order to accomplish this, all that we need is two annotations:
@JsonIgnore
@JsonProperty
Use @JsonIgnore on the class member and its getter, and @JsonProperty on its setter. A sample illustration would help to do this:
c...
schema builder laravel migrations unique on two columns
...nique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(['mytext', 'user_id']);
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Yellow fade effect with JQuery
... comments, effects.core.js and effects.highlight.js need to be included in order to use this.
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Number of rows affected by an UPDATE in PL/SQL
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How to remove a single, specific object from a ConcurrentBag?
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You can't. Its a bag, it isn't ordered. When you put it back, you'll just get stuck in an endless loop.
You want a Set. You can emulate one with ConcurrentDictionary. Or a HashSet that you protect yourself with a lock.
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A dependent property in a ReferentialConstraint is mapped to a store-generated column
...the parent table is changed, so be careful to change values in the correct order in the "Tables and Columns" window.
Also, after you've fixed the problematic relationship, there's a good chance that a simple "Refresh" on the model won't correctly remove the erronous relationship from the model and ...
How do I get the AM/PM value from a DateTime?
... You need to add new System.Globalization.CultureInfo("en-US") in order to get this right (if you are not already running the thread in a US context)
– thomas
Jun 24 '15 at 11:06
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Advantage of switch over if-else statement
...he clearest code is probably:
if (RequiresSpecialEvent(numError))
fire_special_event();
Obviously this just moves the problem to a different area of the code, but now you have the opportunity to reuse this test. You also have more options for how to solve it. You could use std::set, for exa...
How to select rows with no matching entry in another table?
... I often like to wrap the left join as a subquery/inline view in order to ensure there is no interplay between the WHERE clause and the LEFT JOIN.
– Andrew Wolfe
Feb 7 '17 at 0:47
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