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Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
...cle Database 11g Release 2 and above - by default, no, but an alternative called edition-based redefinition exists
Older versions 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 h...
Running V8 Javascript Engine Standalone
...> ./v8-shell
V8 version 2.0.2
> var x = 10;
> x
10
> function foo(x) { return x * x; }
> foo
function foo(x) { return x * x; }
> quit()
Executing Javascript from the command line:
$> ./v8-shell -e 'print("10*10 = " + 10*10)'
10*10 = 100
Many more features are documented i...
Selecting element by data attribute
...d to select elements based on their data attribute? For example, select all anchors that has data attribute named customerID which has value of 22 .
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Local dependency in package.json
I want to do something like this, so npm install also installs the package.json of ../somelocallib or more importantly its dependencies.
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Hidden features of C
I know there is a standard behind all C compiler implementations, so there should be no hidden features. Despite that, I am sure all C developers have hidden/secret tricks they use all the time.
...
JavaScript chop/slice/trim off last character in string
...viously using the substring version. Thanks!
– Matt Ball
Apr 13 '10 at 14:09
33
forgive me if I'm...
Merge a Branch into Trunk
...
Really? Without risking remerging the same changesets? Can you provide a link to corroborating evidence of this please.
– Neutrino
Apr 3 '12 at 16:56
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Why is it slower to iterate over a small string than a small list?
...nd with timeit and noticed that doing a simple list comprehension over a small string took longer than doing the same operation on a list of small single character strings. Any explanation? It's almost 1.35 times as much time.
...
How to set environment variables in Jenkins?
...ajorVersion" | python -c 'import sys,re,os; print("VERSION_NUMBER="+re.findall(r"[\d+\.]+", sys.stdin.read())[0]+os.environ["BUILD_NUMBER"])'
– kenny_k
Jun 19 '15 at 6:52
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How to define an alias in fish shell?
...
@kyb, nope, fish is smarter than bash like that. Actually, ALL variables in fish are arrays. Go to Shell variables and scroll down to the Arrays subsection
– glenn jackman
Feb 28 '19 at 21:08
...