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C++ unordered_map using a custom class type as the key
...by overloading operator==() for your key type (as you did already).
The difficulty with the hash function is that if your key type consists of several members, you will usually have the hash function calculate hash values for the individual members, and then somehow combine them into one hash valu...
AngularJS disable partial caching on dev machine
...hat the above folks suggested, while well meaning, could prove problematic if the code is left in a production app.
– Aaron Wagner
Apr 7 '14 at 13:43
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How do I list all cron jobs for all users?
...ab , and whatever's in /etc/cron.d . It would also be nice to see the specific commands run by run-parts in /etc/crontab .
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Retrieve only static fields declared in Java class
...s = new ArrayList<Field>();
for (Field field : declaredFields) {
if (java.lang.reflect.Modifier.isStatic(field.getModifiers())) {
staticFields.add(field);
}
}
share
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How do I create a Bash alias?
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Since these files are hidden you will have to do an ls -a to list them. If you don't have one you can create one.
If I remember correctly, when I had bought my Mac, the .bash_login file wasn't there. I had to create it for myself so that I could put prompt info, alias, functions, etc. in it.
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Swift - encode URL
If I encode a string like this:
17 Answers
17
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How do I revert a Git repository to a previous commit?
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This depends a lot on what you mean by "revert".
Temporarily switch to a different commit
If you want to temporarily go back to it, fool around, then come back to where you are, all you have to do is check out the desired commit:
# This will detach your HEAD, that is, leave you with no branch check...
FileNotFoundException while getting the InputStream object from HttpURLConnection
...ws all status codes supported by the webservice and their special meaning, if any.
If the status starts with 4nn or 5nn, you'd like to use getErrorStream() instead to read the response body which may contain the error details.
InputStream error = con.getErrorStream();
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Split files using tar, gz, zip, or bzip2 [closed]
...ermediate large file when (de)compressing. Use the tar -C option to use a different directory for the resulting files. btw if the archive consists from only a single file, tar could be avoided and only gzip used:
# create archives
$ gzip -c my_large_file | split -b 1024MiB - myfile_split.gz_
# unco...
Ideal way to cancel an executing AsyncTask
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If you're doing computations:
You have to check isCancelled() periodically.
If you're doing a HTTP request:
Save the instance of your HttpGet or HttpPost somewhere (eg. a public field).
After calling cancel, call reques...