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#define macro for debug printing in C?
Trying to create a macro which can be used for print debug messages when DEBUG is defined, like the following pseudo code:
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“Keep Me Logged In” - the best approach
My web application uses sessions to store information about the user once they've logged in, and to maintain that information as they travel from page to page within the app. In this specific application, I'm storing the user_id , first_name and last_name of the person.
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How is the fork/join framework better than a thread pool?
What are the benefits of using the new fork/join framework over just simply splitting the big task into N subtasks in the beginning, sending them to a cached thread pool (from Executors ) and waiting for each task to complete? I fail to see how using the fork/join abstraction simplifies the prob...
What are some (concrete) use-cases for metaclasses?
I have a friend who likes to use metaclasses, and regularly offers them as a solution.
19 Answers
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社交应用组件 · App Inventor 2 中文网
... 字体
设置联系人选择框的字体，目前支持的字体有：default, serif, sans serif, 和 monospace。
要使用自定义字体，请将 .ttf 字体文件上传并选中它。
高度
设置联系人选择框的垂直高度，以像素px为单位。
高度百分比
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Class does not implement its superclass's required members
...dated to Xcode 6 beta 5 today and noticed I received errors in nearly all of my subclasses of Apple's classes.
4 Answers
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Canvas width and height in HTML5
Is it possible to fix the width and height of an HTML5 canvas element?
4 Answers
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When to Redis? When to MongoDB? [closed]
...at I want is not a comparison between Redis and MongoDB. I know they are different; the performance and the API is totally different.
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Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
3 Answers
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In Java, what is the best way to determine the size of an object?
I have an application that reads a CSV file with piles of data rows. I give the user a summary of the number of rows based on types of data, but I want to make sure that I don't read in too many rows of data and cause OutOfMemoryError s. Each row translates into an object. Is there an easy way t...