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SQLAlchemy: Creating vs. Reusing a Session
... NorthCat
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answered Aug 31 '12 at 23:45
zzzeekzzzeek
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When does invoking a member function on a null instance result in undefined behavior?
...pointer results in undefined behavior" is mentioned in notes in both §1.9/4 and §8.3.2/4, it's never explicitly stated. (Notes are non-normative.)
However, one can try to deduced it from §3.10/2:
An lvalue refers to an object or function.
When dereferencing, the result is an lvalue. A nul...
Why does casting int to invalid enum value NOT throw exception?
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Override devise registrations controller
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answered Aug 24 '10 at 4:25
theTRONtheTRON
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What's “requestCode” used for on PendingIntent?
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answered Feb 3 '14 at 12:04
Minhaj ArfinMinhaj Arfin
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Using the field of an object as a generic Dictionary key
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answered Mar 11 '09 at 14:49
Marc Gravell♦Marc Gravell
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Is it possible to make relative link to image in a markdown file in a gist?
...markandmarkand
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What does CultureInfo.InvariantCulture mean?
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JohnBJohnB
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Split delimited strings in a column and insert as new rows [duplicate]
... of doing it..
df <- read.table(textConnection("1|a,b,c\n2|a,c\n3|b,d\n4|e,f"), header = F, sep = "|", stringsAsFactors = F)
df
## V1 V2
## 1 1 a,b,c
## 2 2 a,c
## 3 3 b,d
## 4 4 e,f
s <- strsplit(df$V2, split = ",")
data.frame(V1 = rep(df$V1, sapply(s, length)), V2 = unlist(...
Are there other whitespace codes like   for half-spaces, em-spaces, en-spaces etc useful in HTML
...space : &#8239; (no character reference available)
en space : &#8194; or &ensp;
em space : &#8195; or &emsp;
3-per-em space : &#8196; or &emsp13;
4-per-em space : &#8197; or &emsp14;
6-per-em space : &#8198; (no character reference available)
figure space : &...