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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
... new file called /etc/apt/sources.list.d/pgdg.list and add below line
deb http://apt.postgresql.org/pub/repos/apt/ utopic-pgdg main
Follow below commands
wget -q -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install postgresql-9.4
s...
What's the point of having pointers in Go?
...
I really like example taken from http://www.golang-book.com/8
func zero(x int) {
x = 0
}
func main() {
x := 5
zero(x)
fmt.Println(x) // x is still 5
}
as contrasted with
func zero(xPtr *int) {
*xPtr = 0
}
func main() {
x := 5
...
Add Bootstrap Glyphicon to Input Box
...m-control-feedback"></span>
</div>
</form>
DEMO : http://jsfiddle.net/LS2Ek/1/
This demo is based on an example in Bootstrap docs. Scroll down to "With Optional Icons" here http://getbootstrap.com/css/#forms-control-validation
...
What is the difference between Pan and Swipe in iOS?
...
According to http://hammerjs.github.io/, I think the difference is:
pan: move directions in the same big view
swipe: switch between several views
The gesture is the same, both use one finger and move.
...
Android static object lifecycle
...ass along
your search criteria from activity to
activity (similar to a web http
request)
using application preferences, you
could save the values and retrieve
them in the activity that needs them
using the sqlite database you can
persist them in a table and retrieve
them later
if you need to just sa...
What is Full Text Search vs LIKE
... all languages for example MSSQL doesn't support Greek (check on this page http://msdn.microsoft.com/en-us/library/ms176076(v=sql.110).aspx )
share
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improve this answer
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Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...-checking API, MessagePack supports IDL. (specification is available from: http://wiki.msgpack.org/display/MSGPACK/Design+of+IDL)
Protocol Buffers and Thrift require IDL (don't support dynamic-typing) and provide more mature IDL implementation.
MessagePack has streaming API (Ruby, Python, Java, C++...
How to automatically generate N “distinct” colors?
...es (some colors in the articles are not specified in RGB, for instance):
http://chem8.org/uch/space-55036-do-blog-id-5333.html
https://metacpan.org/pod/Color::Library::Dictionary::NBS_ISCC
Color Theory: How to convert Munsell HVC to RGB/HSB/HSL
For Kelly's and Boynton's list, I've already made t...
What are best practices for REST nested resources?
...rtments" means departments of the current resource )
Below is an example HTTP exchange (bodies are in yaml since it's easier to write):
Request
GET / HTTP/1.1
Host: api.acme.io
Accept: text/yaml, text/acme-mediatype+yaml
Response: a list of links to main
Should I use #define, enum or const?
...ollowing would not be thread-safe, in spite of the use of a mutex
Source: http://en.wikipedia.org/wiki/Bit_field:
And if you need more reasons to not use bitfields, perhaps Raymond Chen will convince you in his The Old New Thing Post: The cost-benefit analysis of bitfields for a collection of bool...