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How to convert IEnumerable to ObservableCollection?
...em = source.GetEnumerator();
var gType = source.GetType();
string collectionFullName = gType.FullName;
Type[] genericTypes = gType.GetGenericArguments();
string className = genericTypes[0].Name;
string classFullName = genericTypes[0].FullName;
string a...
“Undefined reference to” template class constructor [duplicate]
...er won't compile the constructors cola<float>::cola(...) and cola<string>::cola(...) until it is forced to do so. And we must ensure that this compilation happens for the constructors at least once in the entire compilation process, or we will get the 'undefined reference' error. (This a...
Is the != check thread safe?
...It is not sufficient. In fact, in the absence of synchronization (and the extra "happens before" relationships that imposes), the optimization is valid,
– Stephen C
Aug 28 '13 at 9:49
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How do you get a query string on Flask?
Not obvious from the flask documention on how to get the query string. I am new, looked at the docs, could not find!
9 A...
String concatenation in Ruby
I am looking for a more elegant way of concatenating strings in Ruby.
16 Answers
16
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Extract part of a regex match
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Use ( ) in regexp and group(1) in python to retrieve the captured string (re.search will return None if it doesn't find the result, so don't use group() directly):
title_search = re.search('<title>(.*)</title>', html, re.IGNORECASE)
if title_search:
title = title_search.gr...
use Winmerge inside of Git to file diff
...L\" \"$REMOTE\" \"$BASE\" \"$MERGED\"". There were a few incorrect escaped strings (note a few additional unwanted backslashes there right before the $ - I guess $ don't need to be escaped). Also, it was missing an end " after WinMergeU?.exe. Run git config --get mergetool.winmerge.cmd to see what h...
generating GUID without hyphen
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Note that you are talking about the (canonical) string representation of a Guid. The Guid itself is actually a 128-bit integer value.
You can use the "N" specifier with the Guid.ToString(String) overload.
Guid.NewGuid().ToString("N");
By default letters are lowercase. ...
How do I base64 encode (decode) in C?
...re is the one from Jouni Malinen that I slightly modified to return a std::string:
/*
* Base64 encoding/decoding (RFC1341)
* Copyright (c) 2005-2011, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
// 2016-12-...
How does a PreparedStatement avoid or prevent SQL injection?
...he final form query that is constructed using PreparedStatements will be a string or otherwise?
10 Answers
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