大约有 20,000 项符合查询结果（耗时：0.0412秒） [XML]
How to indent a few lines in Markdown markup?
...dented which you may not want in your layout. Resize your rendered view to test. Also,   is closer to tab.
– dimmech
Apr 11 '19 at 15:30
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java: ArrayList - how can i check if an index exists?
...
Thank you, needed this technique for unit testing whether array indexes exist.
– Noumenon
Sep 3 '13 at 4:34
11
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How to return a value from __init__ in Python?
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f = Foo()
Gives this error:
Traceback (most recent call last):
File "test_init.py", line 5, in <module>
f = Foo()
TypeError: __init__() should return None, not 'int'
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How do we control web page caching, across all browsers?
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Likely your testing methodology was wrong. Maybe the page was already in the cache? Maybe the headers were incorrect/overriden? Maybe you were looking at the wrong request? Etc..
– BalusC
Jan 15 '10...
How do I load my script into the node.js REPL?
...(\"./build/main/index.js\"); console.log(\"Use `client` in repl\")' -i",
tested using node v8.1.2
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Getting MAC Address
...= None
if if_ip == ip:
return if_mac
return None
Testing:
>>> mac_for_ip('169.254.90.191')
'2c:41:38:0a:94:8b'
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“Invalid form control” only in Google Chrome
...is:
<form>
<div style="display: none;">
<input name="test" type="text" required/>
</div>
<input type="submit"/>
</form>
solution to this problem will depend on how the site should work
for example if you don't want the form to submit unless this fie...
Is it possible to program iPhone in C++
... experienced C++ programmers to learn Objective-C? I managed to mash a few test apps together, but I find the syntax a little backwards and I am sure that I am doing things that lead to memory leaks etc just through lack of knowledge of Objective-C
– Lea Hayes
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How to establish a connection pool in JDBC?
..." ); //loads the jdbc driver
cpds.setJdbcUrl( "jdbc:postgresql://localhost/testdb" );
cpds.setUser("swaldman");
cpds.setPassword("test-password");
// the settings below are optional -- c3p0 can work with defaults
cpds.setMinPoolSize(5);
cpds.setAcquireIncrement(5);
cpds.setMaxPoolSize(20);
// The ...
Shell - Write variable contents to a file
...me
if [ -f "$destdir" ]
then
echo "$var" > "$destdir"
fi
The if tests that $destdir represents a file.
The > appends the text after truncating the file. If you only want to append the text in $var to the file existing contents, then use >> instead:
echo "$var" >> "$destdi...