大约有 42,000 项符合查询结果（耗时：0.0466秒） [XML]
How to get ID of the last updated row in MySQL?
...
I've found an answer to this problem :)
SET @update_id := 0;
UPDATE some_table SET column_name = 'value', id = (SELECT @update_id := id)
WHERE some_other_column = 'blah' LIMIT 1;
SELECT @update_id;
EDIT by aefxx
This technique can be further...
Undo a Git merge that hasn't been pushed yet
... did a git merge some-other-branch locally, but never pushed the changes to origin master. I didn't mean to merge, so I'd like to undo it. When doing a git status after my merge, I was getting this message:
...
Plotting two variables as lines using ggplot2 on the same graph
...
nice example, but how to customize my own colours (E.g. black and orange)?, because it seems that you are using colour= as the variable name.
– Darwin PC
Oct 27 '15 at 14:23
...
Convert Java Array to Iterable
...r
Iterable<Integer> iterable = Arrays.asList(foo);
Though you need to use an Integer array (not an int array) for this to work.
For primitives, you can use guava:
Iterable<Integer> fooBar = Ints.asList(foo);
<dependency>
<groupId>com.google.guava</groupId>
...
Why cast unused return values to void?
Is there any reason for casting an unused return value to void, or am I right in thinking it's a complete waste of time?
9 ...
How do I update Node.js?
I did the following to update my npm:
30 Answers
30
...
Redeploy alternatives to JRebel [closed]
JRebel allows for newly compiled code to be redeployed without restarting the application. I am wondering if there are any alternative (free?). The FAQ page answers this question, but I am sure it's biased towards JRebel. This question was asked a year ago on this site, but I am bringing it ba...
What and When to use Tuple? [duplicate]
May someone please explain what a Tuple is and how to use it in a Real World Scenario. I would like to find out how this can enrich my coding experience?
...
What are the differences between BDD frameworks for Java? [closed]
...
Very pretty report output
Nice plugin framework
Poorly documented. I had to read the source to figure it out (luckily its extremely good quality).
Fixtures seemed likely to end up tightly coupled to the html.
EasyB
Very shallow learning curve (even for non-Groovy Developers)
Extremely powerful ...
Ruby/Rails: converting a Date to a UNIX timestamp
...
The code date.to_time.to_i should work fine. The Rails console session below shows an example:
>> Date.new(2009,11,26).to_time
=> Thu Nov 26 00:00:00 -0800 2009
>> Date.new(2009,11,26).to_time.to_i
=> 1259222400
>>...