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find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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App Inventor 2 KIO4_Base64 拓展，更强大的图像Base64编解码工具，解码后...
... App Inventor 2 KIO4_Base64 拓展，更强大的图像Base64编解码工具，解码后的图像可写入到文件
KIO4_Base64 拓展
Base64解码后写入图像文件
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Unnamed/anonymous namespaces vs. static functions
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lukeluke
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39
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How to print color in console using System.out.println?
...NSI_YELLOW = "\u001B[33m";
public static final String ANSI_BLUE = "\u001B[34m";
public static final String ANSI_PURPLE = "\u001B[35m";
public static final String ANSI_CYAN = "\u001B[36m";
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Then, you could reference those as necessary.
For examp...
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edited Mar 30 '14 at 19:59
Millie Smith
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C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]
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edited May 24 '10 at 3:30
answered May 24 '10 at 3:24
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I have a Nexus 4 with Android 4.3 and I am trying to connect the device to a computer with Windows 7 64bit.
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truthealitytrutheality
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6
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Padding within inputs breaks width 100%
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Vega
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answered Dec 17 '12 at 16:29
Víctor Dieppa Ga...