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Regex how to match an optional character
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You can make the single letter optional by adding a ? after it as:
([A-Z]{1}?)
The quantifier {1} is redundant so you can drop it.
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Intellij idea subversion checkout error: `Cannot run program “svn”`
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I solved this by uncheking the "Use command-line client" option from Subversion settings.
This works with version 1.6 and 1.7 only. See @Vic's answer for SVN version 1.8.
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PowerShell: Setting an environment variable for a single command only
...er executing the command. I've accomplished this for common commands I use by adding functions similar to the following to my PowerShell profile.
function cmd_special()
{
$orig_master = $env:app_master
$env:app_master = 'http://host.example.com'
mycmd $args
$env:app_master = $orig_master
}
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UITableView - scroll to the top
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anyone noticed that in iOS11 this all is broken and not scrolling correctly in some cases?
– Peter Lapisu
May 10 '18 at 10:41
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Regex for quoted string with escaping quotes
..."any character that's not a quote or a backslash" or "a backslash followed by any character". I can't believe I didn't think to do that...
– Ajedi32
Jan 3 '14 at 22:17
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Case insensitive comparison NSString
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As noted above by matm, this will return true if someString is nil.
– nh32rg
Jul 26 '13 at 15:28
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“loop:” in Java code. What is this, and why does it compile?
...s the OP might not be familiar with the goto/label concept, that it's generally regarded as a bad practice, except in very particular situations (for instance, for shortcutting multiple nested loops).
– haylem
Sep 29 '10 at 13:21
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Regular Expressions- Match Anything
...ng".
Another option that only works for JavaScript (and is not recognized by any other regex flavor) is [^]* which also matches any string. But [\s\S]* seems to be more widely used, perhaps because it's more portable.
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Go: panic: runtime error: invalid memory address or nil pointer dereference
...ording to the docs for func (*Client) Do:
"An error is returned if caused by client policy (such as CheckRedirect), or if there was an HTTP protocol error. A non-2xx response doesn't cause an error.
When err is nil, resp always contains a non-nil resp.Body."
Then looking at this code:
res, err := ...
Python xml ElementTree from a string source?
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for the correct answer, see the one provided by @dgassaway
– 2.718
Sep 26 '14 at 0:15
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