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How to create id with AUTO_INCREMENT on Oracle?
...NCREMENT by 1),
c2 VARCHAR2(10)
);
Alternatively, Oracle 12 also allows to use a sequence as a default value:
CREATE SEQUENCE dept_seq START WITH 1;
CREATE TABLE departments (
ID NUMBER(10) DEFAULT dept_seq.nextval NOT NULL,
DESCRIPTION VARCHAR2(50) NOT NULL);
ALTER T...
How to get row from R data.frame
...anted
x[1,]==y
This page (from this useful site) has good information on indexing like this.
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When should I use Inline vs. External Javascript?
...
At the time this answer was originally posted (2008), the rule was simple: All script should be external. Both for maintenance and performance.
(Why performance? Because if the code is separate, it can easier be cached by browsers.)
JavaScript doesn't belon...
How to fix corrupted git repository?
...ss.
Another alternative which worked for me was to reset the git head and index to its previous state using:
git reset --keep
You can also do the same manually by opening the Git GUI and selecting each "Staged changes" and click on "Unstage the change". When everything is unstaged, you should now...
Why does git-rebase give me merge conflicts when all I'm doing is squashing commits?
...icts will happen again. You'll have to resolve them again, add them to the index, then use git rebase --continue to move on. (Of course, you can resolve them again by checking out the version from the original merge commit.)
If you happen to have rerere enabled in your repo (rerere.enabled set to t...
Validate uniqueness of multiple columns
...r, one should add a unique constraint to db table. You can set it with add_index helper for one (or multiple) field(s) by running the following migration:
class AddUniqueConstraints < ActiveRecord::Migration
def change
add_index :table_name, [:field1, ... , :fieldn], unique: true
end
end
...
Check if list contains any of another list
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how can u figure out the list index where the condition becomes true ? I have a list with sentences. I have an array with particular words. I want indexes of the list if the sentence have atleast one words from the array. @BrokenGlass
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An efficient way to transpose a file in Bash
...dline
COLS=${#line[@]} # save number of columns
index=0
while read -a line ; do
for (( COUNTER=0; COUNTER<${#line[@]}; COUNTER++ )); do
array[$index]=${line[$COUNTER]}
((index++))
done
done < "$1"
for (( ROW = 0; ROW < COLS; ROW++ )); do
...
Efficient list of unique strings C#
..."one", "two", "one", "two", "zero" };
var uniqueItems = items.Where((item, index) => items.IndexOf(item) == index);
It was adopted from this thread: javascript - Unique values in an array
Test:
using FluentAssertions;
uniqueItems.Count().Should().Be(3);
uniqueItems.Should().BeEquivalentTo("o...