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How to fix the Hibernate “object references an unsaved transient instance - save the transient insta
...tyManager. In basic you just say em.persist(object1); em.persist(object2); etc.
– kaba713
Jan 24 '18 at 15:20
I got th...
Check if object is file-like in Python
...ll expect that if fileno is present then other functionality is available, etc. And similarly for write(buf) (although there are a lot fewer options in that direction).
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Haskell error parse error on input `='
...site. That's why, to make statements (ie: set variables, define functions, etc) you have to declare that you're doing using let. Think of GHCi as one big let ... in ... statement.
– AJF
Apr 14 '17 at 8:56
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How to put comments in Django templates
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Multiline comment in django templates use as follows ex: for .html etc.
{% comment %} All inside this tags are treated as comment {% endcomment %}
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Get type name without full namespace
...
Or this.GetType().Name, this.GetType().FullName, etc. if dealing with instances.
– avenmore
Dec 19 '14 at 7:33
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Using pg_dump to only get insert statements from one table within database
...dd -a before the -t if you only want the INSERTs, without the CREATE TABLE etc to set up the table in the first place.
version >= 8.4.0
pg_dump --column-inserts --data-only --table=<table> <database>
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How to calculate age (in years) based on Date of Birth and getDate()
... then DATEDIFF won't do it @ShailendraMishra, because it approximates days,etc. For example, select datediff(year, '2000-01-05', '2018-01-04') returns 18, not 17 as it should. I used the example above under heading "BEST METHOD FOR YEARS IN INT" and it works perfectly. Thanks!
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Handling an empty UITableView. Print a friendly message
...andatory, it's also possible to just show the empty state without a button etc.
For Swift 4
// MARK: - Deal with the empty data set
// Add title for empty dataset
func title(forEmptyDataSet _: UIScrollView!) -> NSAttributedString! {
let str = "Welcome"
let attrs = [NSAttributedStringKey...
Which characters are illegal within a branch name?
...t least one /. This enforces the presence of a category like heads/, tags/ etc. but the actual names are not restricted. If the --allow-onelevel option is used, this rule is waived.
They cannot have two consecutive dots .. anywhere.
They cannot have ASCII control characters (i.e. bytes whose value...
Select N random elements from a List in C#
...s to avoid collisions. Next take r = rand % (n-2), and do the same thing, etc. until you have k distinct elements in s. This has worst-case running time O(k^2). So for k << n, this can be faster. If you keep s sorted and track which contiguous intervals it has, you can implement it in O(k ...