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Python Pandas: Get index of rows which column matches certain value

...ool (PS: about how to use it please check link ) df.query('BoolCol') Out[123]: BoolCol 10 True 40 True 50 True After we filter the original df by the Boolean column we can pick the index . df=df.query('BoolCol') df.index Out[125]: Int64Index([10, 40, 50], dtype='int64') Als...
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What is sharding and why is it important?

...ited applicability. Besides, the future is probably going to be something fun and exciting like a massive object "cloud" that erases all potential performance limitations, right? :) share | improve...
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Is Dvorak typing appropriate for programming? [closed]

... copy-cut-paste with one hand? xcv have now moved to bi. instead, so have fun reaching all over the keyboard. New tab in Firefox? You were just typing in Dvorak, so you hit ctrl-t, but the keyboard is actually in qwerty mode, so you just ctrl-k to jump to the web search bar. One of the other l...
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How to recursively download a folder via FTP on Linux [closed]

... 123 Better use wget -m (--mirror). wget -r is limited to a recursion depth of 5 by default. – asmaier J...
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.NET: Simplest way to send POST with data and read response

..."admin"), new KeyValuePair<string, string>("password", "test@123") }; var content = new FormUrlEncodedContent(pairs); var response = client.PostAsync("youruri", content).Result; if (response.IsSuccessStatusCode) { } ...
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Find the most frequent number in a numpy vector

... ApogentusApogentus 5,1232727 silver badges3030 bronze badges 4 ...
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What's the strangest corner case you've seen in C# or .NET? [closed]

... I think I showed you this one before, but I like the fun here - this took some debugging to track down! (the original code was obviously more complex and subtle...) static void Foo<T>() where T : new() { T t = new T(); Console.WriteLine(t.ToString...
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How can I round a number in JavaScript? .toFixed() returns a string?

...ating-point systems. For example, 0.1 is really 0.1000000000000000055511151231257827021181583404541015625, and 0.01 is really 0.01000000000000000020816681711721685132943093776702880859375. (Thanks to BigDecimal for proving my point. :-P) Therefore (absent a decimal floating point or rational numbe...
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Working copy XXX locked and cleanup failed in SVN

... 123 +1 to you for this workaround to fix not just the OP's problem (and mine), but also for giving the 5 steps that seem to fix any svn proble...
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How to COUNT rows within EntityFramework without loading contents?

... Craig StuntzCraig Stuntz 123k1212 gold badges244244 silver badges266266 bronze badges ...