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How can I automate the “generate scripts” task in SQL Server Management Studio 2008?
...ot created in the right order), but it is not a solution for me because it doesn't script objects to different files like the Tasks->Generate Scripts option in SSMS does. I'm currently using a modified version of Scriptio (uses the MS SMO API) to act as an improved replacement for the database pu...
What is the difference between join and merge in Pandas?
...ys) or df1.merge(df2, left_index=True).
left vs inner join: df1.join(df2) does a left join by default (keeps all rows of df1), but df.merge does an inner join by default (returns only matching rows of df1 and df2).
So, the generic approach is to use pandas.merge(df1, df2) or df1.merge(df2). But f...
MySQL join with where clause
...ll in the user_category_subscriptions columns.
Conversely, a where clause does the join, and then reduces the rowset. So, this does all of the joins and then eliminates all rows where user_id doesn't equal 1. You're left with an inefficient way to get an inner join.
Hopefully this helps!
...
Why are two different concepts both called “heap”?
...thors began about 1975 to call the pool of available memory a "heap."
He doesn't say which authors and doesn't give references to any specific papers, but does say that the use of the term "heap" in relation to priority queues is the traditional sense of the word.
...
Why are empty strings returned in split() results?
...wer was simple, but fully answered the question. Using "but" in a sentence doesn't imply anything bad. A non-simple answer might have been a more complete answer (e.g., including relevant decisions or a PEP related to the noted functionality).
– orokusaki
Jan 1...
PostgreSQL function for last inserted ID
...ING id;
This is the most clean, efficient and safe way to get the id. It doesn't have any of the risks of the previous.
Drawbacks? Almost none: you might need to modify the way you call your INSERT statement (in the worst case, perhaps your API or DB layer does not expect an INSERT to return a v...
looping through an NSMutableDictionary
...an use [dict allValues] to get an NSArray of your values. Be aware that it doesn't guarantee any order between calls.
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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...pha to define the transparency. As far as I have concluded right now, this does not seem to affect image drawing.
//works with shapes but not with images
ctx.fillStyle = "rgba(255, 255, 255, 0.5)";
I have concluded that setting the globalCompositeOperation works with images.
//works with image...
Building big, immutable objects without using constructors having long parameter lists
...d("Jesus")
res1: Person = Person(Joseph,true,Some(Mary),Set(Jesus))
This does have its share of problems, of course. For instance, try making espouse and Option[Person], and then getting two persons married to each other. I can't think of a way to solve that without resorting to either a private v...
Immutable class?
...le?
In general, an immutable object can be made by defining a class which does not have any of its members exposed, and does not have any setters.
The following class will create an immutable object:
class ImmutableInt {
private final int value;
public ImmutableInt(int i) {
value = i;
...