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Why I cannot cout a string?
...you do not want to add string include, you can use the following
ostream& operator<<(ostream& os, string& msg)
{
os<<msg.c_str();
return os;
}
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Modifying a query string without reloading the page
... change the query, you can use the pushState, as you said. Here it is an example that might help you to implement it properly. I tested and it worked fine:
if (history.pushState) {
var newurl = window.location.protocol + "//" + window.location.host + window.location.pathname + '?myNewUrlQuery=1...
Android Studio says “cannot resolve symbol” but project compiles
...alidate and Restart" option to fix this.
EDIT 2: This fix should work for all similar incidents and is not a twitter4j specific resolution.
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Git add all files modified, deleted, and untracked?
.... You have to add changes to your staging area before you commit it. For example, you can add only some files to a commit and provide comments for it, instead of all files all the time. Here's a handy explanation of what this is doing and why: gitready.com/beginner/2009/01/18/the-staging-area.html
...
How to implement a rule engine?
...Rules = rules.Select(r => CompileRule(r)).ToList();
public bool MatchesAllRules(User user)
{
return compiledRules.All(rule => rule(user));
}
Here is the implementation of BuildExpr:
Expression BuildExpr(Rule r, ParameterExpression param)
{
var left = MemberExpression.Property(param, ...
Concurrent HashSet in .NET Framework?
...ass.
private ConcurrentBag<string> _data;
Self-implementation
Finally, as you did, you can implement your own data type, using lock or other ways that the .NET provides you to be thread-safe. Here is a great example: How to implement ConcurrentHashSet in .Net
The only drawback of this sol...
Select n random rows from SQL Server table
...ot nearly as good as rand(). But if you just need some vaguely randomish samples and don't care about mathematical qualities and such, it'll be good enough. Otherwise you need: stackoverflow.com/questions/249301/…
– user12861
Aug 23 '11 at 20:18
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How to output a multiline string in Bash?
How can I output a multipline string in Bash without using multiple echo calls like so:
7 Answers
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How do I combine two data frames?
I'm using Pandas data frames. I have a initial data frame, say D . I extract two data frames from it like this:
6 Answers
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jquery selector for id starts with specific text [duplicate]
...mended)
A cleaner solution is to add a common class to each of the divs & use
$('.commonClass').
But you can use the first one if html markup is not in your hands & cannot change it for some reason.
Alternative solution - 2 (not recommended if n is a large number)
(as per @Mihai Stanc...