大约有 21,000 项符合查询结果（耗时：0.0447秒） [XML]
SQL selecting rows by most recent date
...g query and results, I'm looking for the most recent entry where the ChargeId and ChargeType are unique.
5 Answers
...
When to use symbols instead of strings in Ruby?
...;DR
A simple rule of thumb is to use symbols every time you need internal identifiers. For Ruby < 2.2 only use symbols when they aren't generated dynamically, to avoid memory leaks.
Full answer
The only reason not to use them for identifiers that are generated dynamically is because of memory ...
Print number of keys in Redis
...
redis_version:6.0.6
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:b63575307aaffe0a
redis_mode:standalone
os:Linux 5.4.0-1017-aws x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:9.3.0
process_id:2854672
run_id:90a5246f10e0aeb6b02cc2765b485d841ffc924e
tc...
Easy idiomatic way to define Ordering for a simple case class
...
My personal favorite method is to make use of the provided implicit ordering for Tuples, as it is clear, concise, and correct:
case class A(tag: String, load: Int) extends Ordered[A] {
// Required as of Scala 2.11 for reasons unknown - the companion to Ordered
// should alr...
String to Dictionary in Python
...thentication to register users on my site, and I'm trying to do it server side. I've gotten to the point where I get my access token, and when I go to:
...
REST API 404: Bad URI, or Missing Resource?
...
404 is just the HTTP response code. On top of that, you can provide a response body and/or other headers with a more meaningful error message that developers will see.
share
|
improve thi...
How do I add custom field to Python log format string?
...
I have this sample not working for me. import uuid uniqueId = str(uuid.uuid4()) extra = {"u_id" : uniqueId} RotatingHandler = RotatingFileHandler(LOG_FILENAME,encoding='utf-8',maxBytes=maxSize, backupCount=batchSize) logger.basicConfig(handlers=[RotatingH...
Check if EditText is empty. [closed]
I have 5 EditTexts in android for users to input. I would like to know if I could have a method for checking all the 5 EditTexts if they are null. Is there any way to do this??
...
Android - Writing a custom (compound) component
The Android app I'm currently developing has a main activity that has grown quite large. This is mainly because it contains a TabWidget with 3 tabs. Each tab has quite a few components. The activity has to control of all those components at once. So I think you can imagine that this Activity has l...
jQuery: How to capture the TAB keypress within a Textbox
...
yea the textbox is dynamically inserted. my example with id #textbox was just to simplify the question =)
– Jon Erickson
Aug 21 '09 at 23:29
...