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bash: shortest way to get n-th column of output
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How to elegantly check if a number is within a range?
...agree this is a terrible idea performance-wise, but the OP wants something more fancy than an if statement. This certainly accomplishes that... ;)
– Tim Coker
Jul 6 '10 at 17:49
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How to find unused/dead code in java projects [closed]
...after a method has been logged for the first time, thus after some time no more performance penalties occur. Maybe a similar thing can be done in Java with static boolean flags...
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Setting an environment variable before a command in Bash is not working for the second command in a
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Jackson enum Serializing and DeSerializer
...n implementation based on @JsonCreator and @JsonValue annotations would be more convenient.
So leveraging on the example by @Stanley the following is a complete self-contained solution (Java 6, Jackson 1.9):
public enum DeviceScheduleFormat {
Weekday,
EvenOdd,
Interval;
private s...
SELECT INTO a table variable in T-SQL
...e a target table! So what you want is
The INSERT statement adds one or more new rows to a table
You can specify the data values in the
following ways:
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By using a SELECT subquery to specify
the data values for one or more rows,
such as:
INSERT INTO MyTable
(PriKey,...
data.table vs dplyr: can one do something well the other can't or does poorly?
...operations together, it allows to easily optimise operations for speed and more importantly memory usage, and also provide some powerful features, all while maintaining the consistency in syntax.
1. Speed
Quite a few benchmarks (though mostly on grouping operations) have been added to the question...
Recursively remove files
... @IlmariKaronen: good point. Wouldn't command rm be a better (that is, more direct) solution? (By "direct" I mean it deals specifically with the problem at hand and nothing else, and therefore is less likely to have any unwanted side-effects, and is also going to be more self-explanatory to anyo...
Simulate delayed and dropped packets on Linux
... distribution
Typically, the delay in a network is not uniform. It is more common to use a something like a normal distribution to describe the variation in delay. The netem discipline can take a table to specify a non-uniform distribution.
# tc qdisc change dev eth0 root netem delay 100ms 20m...
Compiling C++ on remote Linux machine - “clock skew detected” warning
...rming an incremental build by checking if a source files has been modified more recently than its object file, this situation can cause unnecessary files to be built, or worse, necessary files to not be built.
However, if you are building from scratch (not doing an incremental build) you can likely...