大约有 30,000 项符合查询结果（耗时：0.0519秒） [XML]
How do I modify the URL without reloading the page?
... The first parameter is expected to be an object, not just a string.
– Alexis Wilke
Jun 4 '16 at 4:23
47
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How to check if IEnumerable is null or empty?
I love string.IsNullOrEmpty method. I'd love to have something that would allow the same functionality for IEnumerable. Is there such? Maybe some collection helper class? The reason I am asking is that in if statements the code looks cluttered if the patter is (mylist != null && mylist....
Viewing all defined variables [duplicate]
...s was not obvious in your example because all the variables happened to be strings anyway; however, what it's returning is the type of the name of the variable instead of the type of the variable. To fix this: instead of print type(name) use print eval('type(' + name + ')'). I apologize for posting...
Determine whether an array contains a value [duplicate]
...has more upvotes than the answer. But good stuff - I've used indexOf() for strings, but I didn't know you could use it for arrays in general.
– doubleDown
Feb 4 '16 at 12:02
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Android: show soft keyboard automatically when focus is on an EditText
...rride
public void onClick(DialogInterface dialog, int which) {
String text = textEdit.getText().toString();
finish();
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
...
Android java.lang.VerifyError?
...hat is not supported on the android SDK level you are using (for instance, String.isEmpty()).
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How to pass command line arguments to a shell alias? [duplicate]
...you are using double quotes the $1 is actually being evaluated to an empty string and the alias is actually the same as alias serve="python -m SimpleHTTPServer" and so whatever you pass after that alias is ALSO passed on the command line. If you try this set -x; alias serve="python -m SimpleHTTPSe...
Bash: Strip trailing linebreak from output
...lt; log.txt)
Detail:
printf will print your content in place of the %s string place holder.
If you do not tell it to print a newline (%s\n), it won't.
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What is hashCode used for? Is it unique?
...ems, in WP7, which return a sequence of number. Can I use this hashcode to identify an item? For example I want to identify a picture or a song in the device, and check it whereabout. This could be done if the hashcode given for specific items is unique.
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How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
... It seems 'gem' fails to recognize backslashes in the proxy string, whether by http_proxy env var or --http-proxy argument. e.g. from my Ubuntu box --http-proxy http ://domain\\userid@server:port gives me the error: "invalid argument: --http-proxy ..."; Fortunately, my proxy server di...