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Best way to do multi-row insert in Oracle?
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In Oracle, to insert multiple rows into table t with columns col1, col2 and col3 you can use the following syntax:
INSERT ALL
INTO t (col1, col2, col3) VALUES ('val1_1', 'val1_2', 'val1_3')
INTO t (col1, col2, col3) VALUES ('val2_1', 'val2_2', 'val2_3')
INTO t (col1, col2, col3) VALUES ...
Salting Your Password: Best Practices?
...chars and alphanumeric upper/lowercase. Extendable to say all hexadecimal strings under length Z (say 160) since I think a rainbow table of hashed hashes would be useful..
– Tom Ritter
Mar 24 '09 at 13:51
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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...server execute:
$ RAILS_ENV=production rake secret
This returns a large string with letters and numbers. Copy that, which we will refer to that code as GENERATED_CODE.
Login to your server
If you login as the root user, find this file and edit it:
$ vi /etc/profile
Go to the bottom of the fi...
Can't use Swift classes inside Objective-C
...import Foundation
@objc
class SwiftClass:NSObject {
private var _stringValue: String
var stringValue: String {
get {
print("SwiftClass get stringValue")
return _stringValue
}
set {
print("SwiftClass set stringValue = \(newValu...
Can I add jars to maven 2 build classpath without installing them?
Maven2 is driving me crazy during the experimentation / quick and dirty mock-up phase of development.
24 Answers
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How to see the changes in a Git commit?
When I do git diff COMMIT I see the changes between that commit and HEAD (as far as I know), but I would like to see the changes that were made by that single commit.
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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
... default option for the column in the migration
....
add_column :status, :string, :default => "P"
....
OR
You can use a callback, before_save
class Task < ActiveRecord::Base
before_save :default_values
def default_values
self.status ||= 'P' # note self.status = 'P' if self.status....
TCPServer TCP服务器扩展：在Android设备上创建TCP服务器 · App Inventor 2 中文网
... TCPServer TCP服务器扩展：在Android设备上创建TCP服务器
TCPServer TCP服务器扩展
介绍
主要功能
下载
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jQuery Ajax File Upload
...t that long any more because all IE only has a 22% world wide market share and 27% in the U.S. and dropping fast. Chances are it is people over 70 years old. So rather then IE dictating what developers have to do IE will either have to shape up or get out of the race.
– Drew Ca...
Convert line-endings for whole directory tree (Git)
...r - search, filter and replace text data
sfk addhead - insert string at start of text lines
sfk addtail - append string at end of text lines
sfk patch - change text files through a script
sfk snapto - join many text files into one file
sfk joinlines ...