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MySQL: how to get the difference between two timestamps in seconds
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Keep in mind that TIMEDIFF() return data type of TIME. TIME values may range from '-838:59:59' to '838:59:59' (roughly 34.96 days)
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Random row from Linq to Sql
... this answer here as a potential point of interest for LINQ to Objects.
Strangely enough, you don't actually need to get the count. You do, however, need to fetch every element unless you get the count.
What you can do is keep the idea of a "current" value and the current count. When you fetch the...
svn : how to create a branch from certain revision of trunk
... copy
-r [--revision] arg : ARG (some commands also take ARG1:ARG2 range)
A revision argument can be one of:
NUMBER revision number
'{' DATE '}' revision at start of the date
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What are the use(s) for tags in Go?
...er{"Bob", "bob@mycompany.com"}
t := reflect.TypeOf(u)
for _, fieldName := range []string{"Name", "Email"} {
field, found := t.FieldByName(fieldName)
if !found {
continue
}
fmt.Printf("\nField: User.%s\n", fieldName)
fmt.Printf("\tWhole tag value : %q\n", field.Tag)
f...
No visible cause for “Unexpected token ILLEGAL”
...thod. Ahh it would be so nice if there was a way to only copy chars in the range of 32..127 (but there's probably an app for that :) )
– ack
Dec 15 '13 at 15:00
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How many database indexes is too many?
... new rows are added with values that are "in the middle" of existing value ranges for that column. This can be mitigated by partitioning and having the new data loads aligned with the partitioning scheme, and by using direct path inserts.
To address your question more directly, I think it is probab...
How to convert TimeStamp to Date in Java?
...conds, and you want all the records for an entire day, then we need a time range. We must have a start moment and a stop moment. Your query has only a single date-time criterion where it should have had a pair.
The LocalDate class represents a date-only value without time-of-day and without time zo...
Does C have a “foreach” loop construct?
...also interested in C++ solutions, C++ has a native for-each syntax called "range based for"
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How to implement WiX installer upgrade?
...ts. Any products which have this UpgradeCode, whose versions fall into the range specified, and where the UpgradeVersion/@OnlyDetect attribute is no (or is omitted), will be removed.
The documentation for RemoveExistingProducts mentions setting the UPGRADINGPRODUCTCODE property. It means that the u...
My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
...Bandwidth in decreasing efficiency:
Plugin networking: Flash sockets are raw except for initial policy request
WebSockets: connection setup handshake and a few bytes per frame
HTTP streaming (re-use of server connection)
HTTP long-poll: connection for every message
HTTP poll: connection for every ...