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What Makes a Method Thread-safe? What are the rules?
...es for what makes a method thread-safe? I understand that there are probably a million one-off situations, but what about in general? Is it this simple?
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
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Yes, MD5 is somewhat less CPU-intensive. On my Intel x86 (Core2 Quad Q6600, 2.4 GHz, using one core), I get this in 32-bit mode:
MD5 411
SHA-1 218
SHA-256 118
SHA-512 46
and this in 64-bit mode:
MD5 4...
Filter rows which contain a certain string
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The answer to the question was already posted by the @latemail in the comments above. You can use regular expressions for the second and subsequent arguments of filter like this:
dplyr::filter(df, !grepl("RTB",TrackingPixel))
Since you have not provided the o...
How can I account for period (AM/PM) using strftime?
Specifically I have code that simplifies to this:
4 Answers
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What is the pythonic way to unpack tuples? [duplicate]
This is ugly. What's a more Pythonic way to do it?
2 Answers
2
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Order a List (C#) by many fields? [duplicate]
I want to order a List of objects in C# by many fields, not just by one. For example, let's suppose I have a class called X with two Attributes, A and B, and I have the following objects, in that order:
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Serialize object to query string in JavaScript/jQuery [duplicate]
I'm trying to find information on how to serialize an object to query string format, but all my searches are drowning in results on how to go the other way (string/form/whatever to JSON).
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Converting string “true” / “false” to boolean value [duplicate]
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This works. It's probably better to add var before the declaration of val.
– hotshot309
Jan 3 '12 at 20:58
7
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Hide horizontal scrollbar on an iframe?
I need to hide the horizontal scollbar on an iframe using css, jquery or js.
4 Answers
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Compare two objects and find the differences [duplicate]
what is the best way to compare two objects and find the differences?
2 Answers
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