大约有 42,000 项符合查询结果（耗时：0.0598秒） [XML]
PostgreSQL - fetch the row which has the Max value for a column
...that contains records with columns for time_stamp, usr_id, transaction_id, and lives_remaining. I need a query that will give me the most recent lives_remaining total for each usr_id
...
What is the difference between Serialization and Marshaling?
...d techniques (such as RPC), the term "Marshaling" is used but don't understand how it differs from Serialization. Aren't they both transforming objects into series of bits?
...
Difference between jar and war in Java
What is the difference between a .jar and a .war file?
Is it only the file extension or is there something more?
13 A...
Fast and responsive interactive charts/graphs: SVG, Canvas, other?
...right technology to use for updating a project that basically renders thousands of points in a zoomable, pannable graph. The current implementation, using Protovis, is underperformant. Check it out here:
...
How to parse/format dates with LocalDateTime? (Java 8)
Java 8 added a new java.time API for working with dates and times ( JSR 310 ).
7 Answers
...
Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
...ndicate, that the next read will be the end of the stream.
Consider this (and assume then next read will be at the end of the stream):
while(!inStream.eof()){
int data;
// yay, not end of stream yet, now read ...
inStream >> data;
// oh crap, now we read the end and *only* now the eo...
How to organize large R programs?
...en I undertake an R project of any complexity, my scripts quickly get long and confusing.
11 Answers
...
SQLite Concurrent Access
Does SQLite3 safely handle concurrent access by multiple processes
reading/writing from the same DB? Are there any platform exceptions to that?
...
What is the difference between and ?
What is the difference between and ?
11 Answers
11
...
What is the best (and safest) way to merge a Git branch into master?
...Also I would not push my changes, until I'm happy with what I want to push and also I wouldn't push things at all, that are only for me and my local repository. In your description it seems, that test is only for you? So no reason to publish it.
git always tries to respect yours and others changes,...