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What are the differences between the different saving methods in Hibernate?
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saveOrUpdateCopy
This is deprecated and should no longer be used. Instead there is...
merge
Now this is where my knowledge starts to falter. The important thing here is the difference between transient, detached and persistent entities. For more info on the object states, take a look here. W...
What's wrong with cplusplus.com?
... I've come across over the last two years, which I don't remember. I might add few more later, if I come across again.
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How to initialize a JavaScript Date to a particular time zone
...tring containing a numeric UTC offset from any time zone. It uses this to adjust the value being parsed, and stores the UTC equivalent. The original local time and offset are not retained in the resulting Date object. For example:
var d = new Date("2020-04-13T00:00:00.000+08:00");
d.toISOString(...
Bootstrap combining rows (rowspan)
...;/div>
<div class="col-lg-2 col-md-2 col-sm-3 col-xs-2" style="padding:0px">
<div class="short-div" style="background-color:green">Span 2</div>
<div class="short-div" style="background-color:purple">Span 2</div>
</div>
<div class...
git push to specific branch
Even after reading this question: git-push-current-branch , I am still having difficulty figuring out how I should write my git push command. As mentioned in the question link, it's not clear from the documentation.
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Wrapping synchronous code into asynchronous call
...ince each operation is asynchronous, none of them are actually using a thread). Parallel concurrency is when you have multiple threads each doing a separate operation.
The first thing to do is re-evaluate this assumption:
The method itself is synchronous call to the service and there is no poss...
Django's SuspiciousOperation Invalid HTTP_HOST header
After upgrading to Django 1.5, I started getting errors like this:
4 Answers
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What are the differences between virtual memory and physical memory?
...g infinite memory available on their system.
Virtual memory mappings are made to correspond to actual physical addresses. The operating system creates and deals with these mappings - utilizing the page table, among other data structures to maintain the mappings. Virtual memory mappings are always f...
Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
...ions of Oracle - no; DDL causes an implicit commit
SQL Server - yes
Sybase Adaptive Server - yes
DB2 - yes
Informix - yes
Firebird (Interbase) - yes
SQLite also appears to have transactional DDL as well. I was able to ROLLBACK a CREATE TABLE statement in SQLite. Its CREATE TABLE documentation does...
How to pretty-print a numpy.array without scientific notation and with given precision?
...078 0.480 0.413 0.830 0.776 0.102 0.513 0.462 0.335 0.712]
instead of
[ 0.078 0.48 0.413 0.83 0.776 0.102 0.513 0.462 0.335 0.712]
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