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Questions tagged [user-defined]

253 questions
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1 answer

How to throw an user-defined exception from Velocity Template Script (VTL)?

How to throw an user-defined exception from Velocity Template Script (VTL) ? From my velocity script, i need to throw an exception based on a condition, so that the caller can catch the exception and present an useful error messages to the end…
anuu_online
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6
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UserDefinedFileAttributeView view returns null , unable to set attributes

I am trying to tag files on an android device to display later on a list based on user defined tags (e.g. Category , Description , Owner). I have used the widely recommended java NIO code for UserDefinedFileAttributes The file path is found and is…
Mohammed Dawood
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6
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2 answers

SQL stored procedure - table as parameter

I have a database with different tables (all the same structure) where I'd like to run a stored procedure having a parameter that defines which table to query. I can't seem to figure it out: CREATE SCHEMA test; GO First I created a schema CREATE…
Olivia
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6
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1 answer

User-specified attributes of data.table get removed

I have a function that returns a data.table with various useful user-defined attributes attached. I notice, though, that the attributes disappear when one manipulates the data.table. library(data.table) my_dt <- data.table(col1 = rnorm(20), col2 =…
arvi1000
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6
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2 answers

User-defined errno range values (POSIX or Linux-specific)

Questions for POSIX if possible, else for Linux-specific platforms: Is there user-defined errno values? (as for signals SIGUSR1 and SIGUSR2) How to find an errno value not used by the system? (negative values?) How to prevent strerror() break?…
oHo
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5
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2 answers

User-Defined Aggregate functions in Oracle PIVOT clause

Unable to use user-defined aggregate functions in Oracle PIVOT clause. I created a user-defined aggregate function called string_agg. I am able to use it in a simple statement such as... select id, string_agg(value) from ( select 'user1' as id,…
nick
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5
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1 answer

How to insert variable in user-defined character class?

What I am trying to do is to allow programs to define character class depending on text encountered. However, <[]> takes characters literally, and the following yields an error: my $all1Line = slurp "htmlFile"; my @a = ($all1Line ~~ m:g/ (\" || \')…
lisprogtor
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5
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3 answers

Deleting user-defined elements in the middle of a vector

I'm coding a program where I want to draw a card, and then delete so that it doesn't get drawn again. I have a vector of Cards (class containing 2 structs that define Suit and Value) called deck and I don't really know how to use iterators very…
Jota
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5
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2 answers

Jupyter Notebook: Import .ipynb file and access it's method in other .ipynb file giving error

I am fairly new to Jupyter Notebook. I have played around with it for a while. But this was my first time trying to import another notebook into my main class. For reference, I am using Anaconda 4.3.1 and Python v2.7. I am trying to replicate what I…
anugrah
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5
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3 answers

Plotting a choropleth map (with geopandas) using a user_defined classification scheme

I'm kind of new to python, so I'm hoping that the answer to my question is relatively straight forward. I'm trying to make a choropleth map using geopandas. However, since I'm making multiple maps that need to be compared to each other, it is…
Chiara
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0 answers

Adding custom/user-defined metadata to images/photos?

I'm writing some software that will need to add custom fields to images/photos. Specifically for iOS/OS X, but the ideal solution would be some industry-standard or platform-agnostic way of doing it. EXIF's Comments field isn't really viable…
God of Biscuits
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5 answers

How can I define a "Do-Nothing" sort?

I'm working on a system where I need to be able to sort a vector by a given predicate, which my classes shouldn't have control over. Basically, I pass them a derived class and they blindly sort on it. As one of the "delightful quirks", one of the…
deworde
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2 answers

MySQL: Re-using user-defined variables in the same SELECT statement

I did a search in stackoverflow but didn't quite find an exact answer to my question, so please help me if you can. I 'want' to build a SQL statement like this: SELECT @tax1 := (complicated calculation formula), @owe := (another complicated…
JoJoeDad
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4
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3 answers

mysql user variable within an IN where statement

I now gave up and sorted it by other means but because "curiosity killed the cat" I am trying to figure out how to use mysql query @variables within an IN where statement: So, from this: SELECT * FROM table1 WHERE table1.ID IN (794,758) Try to…
luison
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4
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2 answers

Use an user variable in a "INSERT ON" clause

I try to make a clean trigger with user-defined variables, so this is my code : SET @target_bdd = 'trigger_second'; SET @trigger_name = 'account_copy'; SET @table_name = 'account'; SET @primary_key = 'id'; DROP TRIGGER IF EXISTS…
Thomas K
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