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What is the difference between shallow copy, deepcopy and normal assignment operation?
... 6]
c = [a, b]
Using normal assignment operatings to copy:
d = c
print id(c) == id(d) # True - d is the same object as c
print id(c[0]) == id(d[0]) # True - d[0] is the same object as c[0]
Using a shallow copy:
d = copy.copy(c)
print id(c) == id(d) # False - d is now a n...
How to Store Historical Data
...e exact same fields as FOO with the exception of an auto-incrementing HIST_ID. Every time FOO is updated, I perform an insert statement into FOO_Hist similar to: insert into FOO_HIST select * from FOO where id = @id .
...
JPA - Returning an auto generated id after persist()
...EclipseLink) and Spring. Say I have a simple entity with an auto-generated ID:
7 Answers
...
How do you obtain a Drawable object from a resource id in android package?
...o use the code below (or something like it) to get an object from the android.R.drawable.* package?
6 Answers
...
What is the error “Every derived table must have its own alias” in MySQL?
...ich can the be used to refer to it in the rest of the outer query.
SELECT ID FROM (
SELECT ID, msisdn FROM (
SELECT * FROM TT2
) AS T
) AS T
In your case, of course, the entire query could be replaced with:
SELECT ID FROM TT2
...
JavaScript - onClick to get the ID of the clicked button
How do find the id of the button which is being clicked?
16 Answers
16
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How to get last inserted row ID from WordPress database?
...dPress plugin has a table with a AUTO_INCREMENT primary key field called ID. When a new row is inserted into the table, I'd like to get the ID value of the insertion.
...
How to get WordPress post featured image URL
...t me know if it works for you.
<?php if (has_post_thumbnail( $post->ID ) ): ?>
<?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?>
<div id="custom-bg" style="background-image: url('<?php echo $image[0]; ?>')"&g...
In CMake, how can I test if the compiler is Clang?
...
A reliable check is to use the CMAKE_<LANG>_COMPILER_ID variables. E.g., to check the C++ compiler:
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# using Clang
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# using GCC
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
# using ...
Combine two ActiveRecord::Relation objects
...ates being able to use any ActiveRecord methods on them afterwards, but I didn't need to. I did this:
name_relation = first_name_relation + last_name_relation
Ruby 1.9, rails 3.2
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