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Getting “unixtime” in Java
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483
Avoid the Date object creation w/ System.currentTimeMillis(). A divide by 1000 gets you to Uni...
Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
...r necessary.
You can use DT[order(-rank(x), y)].
x y v
1: c 1 7
2: c 3 8
3: c 6 9
4: b 1 1
5: b 3 2
6: b 6 3
7: a 1 4
8: a 3 5
9: a 6 6
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How to get a substring of text?
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answered May 31 '11 at 8:14
Matteo AlessaniMatteo Alessani
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Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?
...exec/java_home -v 1.7)"
or
export JAVA_HOME="$(/usr/libexec/java_home -v 1.8)"
Update: added -v flag based on Jilles van Gurp response.
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How to get all child inputs of a div element (jQuery)
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308
Use it without the greater than:
$("#panel :input");
The > means only direct children of t...
Replace one character with another in Bash
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answered May 8 '11 at 15:11
Brian ClapperBrian Clapper
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How to reuse an ostringstream?
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edited Mar 8 '09 at 21:41
answered Mar 8 '09 at 21:08
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Java 8 method references: provide a Supplier capable of supplying a parameterized result
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simhumileco
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answered Apr 7 '14 at 15:50
Louis WassermanLou...
Outline effect to text
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Klesun
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answered Feb 7 '11 at 8:23
KyleKyle
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java.net.URLEncoder.encode(String) is deprecated, what should I use instead?
...encode; the second is the name of the character encoding to use (e.g., UTF-8). For example:
System.out.println(
URLEncoder.encode(
"urlParameterString",
java.nio.charset.StandardCharsets.UTF_8.toString()
)
);
s...