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What does Class mean in Java?
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I thought the whole point of a generic is you don't know the class type upfront. Otherwise you would just define a function to use a particular class type for the parameter. This question mark still doesn't make sense.
– Brain2000
Mar 6 ...
HAProxy redirecting http to https (ssl)
...on that "the syntax of both directives is the same, that said, redirect is now considered as legacy and configurations should move to the http-request redirect form". I infer, without being completely sure, that the same explanation applies to the newer releases of the open source version of HAProxy...
How to reorder data.table columns (without copying)
... @PeterPan See also NEWS about the devel version 1.10.5: "setcolorder() now accepts less than ncol(DT) columns to be moved to the front"
– Henrik
Oct 22 '17 at 12:21
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Vim: Replacing a line with another one yanked before
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This has the additional disadvantage
that line X is now in the default
register, which is annoying if I find
another line that should be replaced
with A.
To delete text without affecting the normal registers, you can use the Black hole register "_:
"_dd
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using lodash .groupBy. how to add your own keys for grouped output?
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Using _.chain is considered a bad practice now.
– Pawel
Jan 5 '18 at 13:18
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show 3 more comments
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iPhone get SSID without private library
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does anyone know what BSSID is? it looks like MAC address of a router, but it's actually not. neither it is device's MAC address.
– peetonn
Oct 30 '13 at 5:58
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What is the difference between re.search and re.match?
...e optional pos
argument regardless of whether a
newline precedes it.
Now, enough talk. Time to see some example code:
# example code:
string_with_newlines = """something
someotherthing"""
import re
print re.match('some', string_with_newlines) # matches
print re.match('someother',
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sys.argv[1] meaning in script
...like to note that previous answers made many assumptions about the user's knowledge. This answer attempts to answer the question at a more tutorial level.
For every invocation of Python, sys.argv is automatically a list of strings representing the arguments (as separated by spaces) on the command-l...
Ruby send vs __send__
...th objects of any class, you need to use __send__ to be on the safe side.
Now that leaves the question, why there is send and not just __send__. If there were only __send__ the name send could be used by other classes without any confusion. The reason for that is that send existed first and only la...
Most efficient way to increment a Map value in Java
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Now there is a shorter way with Java 8 using Map::merge.
myMap.merge(key, 1, Integer::sum)
What it does:
if key do not exists, put 1 as value
otherwise sum 1 to the value linked to key
More information here.
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