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Why does X[Y] join of data.tables not allow a full outer join, or a left join?
...ifferent so change to be the same as `merge`
setcolorder(le, names(mallx))
identical(le, mallx)
# [1] TRUE
If you want a full outer join
# the unique values for the keys over both data sets
unique_keys <- unique(c(X[,t], Y[,t]))
Y[X[J(unique_keys)]]
## t b a
## 1: 1 NA 1
## 2: 2 NA 4
## ...
Why do I need 'b' to encode a string with Base64?
...omes a string. A string is a sequence of Unicode characters. base64 has no idea what to do with Unicode data, it's not 8-bit. It's not really any bits, in fact. :-)
In your second example:
>>> encoded = base64.b64encode('data to be encoded')
All the characters fit neatly into the ASCII ...
Pros and cons of AppSettings vs applicationSettings (.NET app.config / Web.config)
...in a <add key="...." value="..." /> entry and you're done.
The downside is: there's no type-checking, e.g. you cannot safely assume your number that you wanted to configure there really is a number - someone could put a string into that setting..... you just access it as ConfigurationManager[...
GIT merge error “commit is not possible because you have unmerged files”
... and tried to push, I got the error push is not possible, at that point I did a "git pull" which made some files with conflict highlighted. I removed the conflicts but I don't know what to do from here..
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Is it possible to set private property via reflection?
... To be fair, it depends on the trust level, but the answer seems valid.
– Marc Gravell♦
Dec 12 '09 at 12:27
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How to write DataFrame to postgres table?
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Did this make it to 0.14?
– Quant
Oct 8 '14 at 19:31
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What does “dereferencing” a pointer mean?
...t's (current) value - I focus below on C and C++.
A pointer scenario
Consider in C, given a pointer such as p below...
const char* p = "abc";
...four bytes with the numerical values used to encode the letters 'a', 'b', 'c', and a 0 byte to denote the end of the textual data, are stored somewher...
Git file permissions on Windows
... I've got a repo on GitHub forked from another. Post merge, they should be identical. However:
6 Answers
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Compiling dynamic HTML strings from database
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@BuuNguyen inside teplateURL suppose if u include some dynamic htmnl page using ng-bind-html , then using compile doesnt work gives error from some unsafe content other side using trustAsHTml only remove unsafe error doesnt compile , any s...
Difference between timestamps with/without time zone in PostgreSQL
...one. Thus, when converting timestamptz to a time zone you are asking what did the clock show in New York at this absolute point in time? whereas when "converting" a timestamp, you're asking what was the absolute point in time when the clock in New York showed x?
– fphilipe
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