大约有 45,000 项符合查询结果（耗时：0.0611秒） [XML]
Makefile variable as prerequisite
...
This will cause a fatal error if ENV is undefined and something needs it (in GNUMake, anyway).
.PHONY: deploy check-env
deploy: check-env
...
other-thing-that-needs-env: check-env
...
check-env:
ifndef ENV
$(error ENV is undefined)
endif
(Note t...
Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
I need to check a JavaScript array to see if there are any duplicate values. What's the easiest way to do this? I just need to find what the duplicated values are - I don't actually need their indexes or how many times they are duplicated.
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Java: Multiple class declarations in one file
...her this actually changes between implementations - I highly doubt it, but if you avoid doing it in the first place, you'll never need to care :)
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How to make a Java class that implements one interface with two generic types?
...<Apple> {
public void consume(Apple a) { ..... }
}
}
If creating these static inner classes bothers you, you can use anonymous classes:
public class TwoTypesConsumer {
private Consumer<Tomato> tomatoConsumer = new Consumer<Tomato>() {
public void consum...
Why is the Windows cmd.exe limited to 80 characters wide?
...ffer size (line width and scrollback) and the window size (viewport size). If you started cmd from a shortcut, you can save these settings for future sessions.
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Python loop counter in a for loop [duplicate]
...s, selected_index):
for counter, option in enumerate(options):
if counter == selected_index:
print " [*] %s" % option
else:
print " [ ] %s" % option
options = ['Option 0', 'Option 1', 'Option 2', 'Option 3']
draw_menu(options, 2)
Note: You can optio...
How do I set the selected item in a comboBox to match my string using C#?
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what if there are more than one "test1" value in combox1
– thoitbk
Jan 4 '15 at 10:31
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redirect COPY of stdout to log file from within bash script itself
...&1
echo "foo"
echo "bar" >&2
Note that this is bash, not sh. If you invoke the script with sh myscript.sh, you will get an error along the lines of syntax error near unexpected token '>'.
If you are working with signal traps, you might want to use the tee -i option to avoid disrupt...
how to stop Javascript forEach? [duplicate]
I'm playing with Node.js and Mongoose — trying to find specific comment in deep comments nesting with recursive function and forEach within. Is there a way to stop Node.js forEach ? As I understand every forEach iteration is a function and and I can't just do break , only return but this w...
How do I find out if first character of a string is a number?
In Java is there a way to find out if first character of a string is a number?
5 Answers
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