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How to set a default value for an existing column
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MSSQL is weird for calling default values "constraints". If anything, they are relaxations; the opposite of a constraint! They make more things valid, not fewer.
– Roman Starkov
May 11 '13 at 12:06
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Are non-synchronised static methods thread safe if they don't modify static class variables?
... share data between threads - you must take care of atomicity, visibility, etc.
This method only operates on parameters, which reside on stack and references to immutable objects on heap. Stack is inherently local to the thread, so no sharing of data occurs, ever.
Immutable objects (String in this...
Hg: How to do a rebase like git's rebase
...g history, even cset parentage, but certainly CollapseExtension, HistEdit, etc. violate that. It's totally a matter of personal choice.
– Ry4an Brase
Apr 20 '10 at 13:46
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How to replace all occurrences of a character in string?
What is the effective way to replace all occurrences of a character with another character in std::string ?
15 Answers
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What does the line “#!/bin/sh” mean in a UNIX shell script?
...mmonly -e (exit on error), or use other programs (/bin/awk, /usr/bin/perl, etc).
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Order data frame rows according to vector with specific order
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I prefer to use ***_join in dplyr whenever I need to match data. One possible try for this
left_join(data.frame(name=target),df,by="name")
Note that the input for ***_join require tbls or data.frame
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How to highlight cell if value duplicate in same column for google spreadsheet?
...ores the first occurence.
Finally the third term picks up duplicates 2, 3 etc. COUNTIF(C1:C, C1) >= 1 starts the search range at the currently evaluated row (the C1 in the C1:C). Then it only evaluates to TRUE (apply highlight) if there is one or more duplicates below this one (and including thi...
How does Go compile so quickly?
...here every single file starts including x headers, which include y headers etc. Bottom line: Go's compiling takes linear time w.r.t to the number of imported packages, where C/C++ take exponential time.
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Get record counts for all tables in MySQL database
Is there a way to get the count of rows in all tables in a MySQL database without running a SELECT count() on each table?
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Plotting two variables as lines using ggplot2 on the same graph
...eom_line()
I'll leave it to you to tidy up the axis labels, legend title etc.
HTH
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