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Does pandas iterrows have performance issues?
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183
Generally, iterrows should only be used in very, very specific cases. This is the general order ...
How to get the command line args passed to a running process on unix/linux systems?
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Why does z-index not work?
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edited Oct 11 '19 at 12:38
LinusGeffarth
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RegEx to parse or validate Base64 data
... the following:
^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$
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Merge two branch revisions using Subversion
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Relative frequencies / proportions with dplyr
...()) %>%
mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vignette:
When you group by multiple variables, each summary peels off one level of the grouping. That makes it ea...
How to add extra namespaces to Razor pages instead of @using declaration?
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163
Update: please take a look at my updated answer that applies to MVC 3 RC: Razor HtmlHelper Exten...
How do I reverse a C++ vector?
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Luc Touraille
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answered Jan 16 '12 at 8:46
Ivaylo Strandjev...
Android: Why does long click also trigger a normal click?
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edited Mar 25 '11 at 3:41
answered Mar 25 '11 at 3:35
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java: HashMap not working
...difference in the code. Auto-boxing means you can write:
myMap.put("foo", 3);
instead of:
myMap.put("foo", new Integer(3));
Auto-boxing means the first version is implicitly converted to the second. Auto-unboxing means you can write:
int i = myMap.get("foo");
instead of:
int i = myMap.get(...