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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
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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 ...
Easy idiomatic way to define Ordering for a simple case class
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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...
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??
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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:
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How do I add custom field to Python log format string?
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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...
jQuery: How to capture the TAB keypress within a Textbox
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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
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REST API 404: Bad URI, or Missing Resource?
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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.
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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...
嵌套块验证失败：未知的代码块类型: procedures_ifreturn，已拒绝添加 - AI...
...me": "Button1",
"parent": "MainLayout",
"properties": {
"Width": -2,
"Height": -2,
"Text": "新按钮",
"TextColor": "&HFF000000",
"BackgroundColor": "&HFF4CAF50"
}
}
]局部变量 全局变量 很容易搞混AI伴侣出现错误: The operation...