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How do I clone a generic list in C#?
...nge can sometimes be a major performance drain, increasing memory usage by orders of magnitude.
– supercat
Sep 23 '13 at 21:25
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using href links inside tag
...s that use form controls to change the presentation of the page (eg., sort order.) These can be implemented either by AJAX to load new content into the page, or, in older implementations, by triggering new page loads, which is essentially a page link.
IMHO these are valid uses of a form control.
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how to change any data type into a string in python
...yvariable) - it often returns information about class type, memory address etc. It's more useful for debugging. Use str(myvariable) for conversion to string and unicode(variable) for conversion to unicode.
– Abgan
Jul 8 '10 at 14:29
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Using jQuery to test if an input has focus
...ilding, several <div> s use the CSS :hover pseudo-class to add a border when the mouse is over them. One of the <div> s contains a <form> which, using jQuery, will keep the border if an input within it has focus. This works perfectly except that IE6 does not support :hover ...
Xcode build failure “Undefined symbols for architecture x86_64”
...on
I had several targets in Xcode with several schemas ( Production , Dev etc ) .. some of my newly added implementation ( Class.m ) were missing in
Xcode->Targets->Build Phases->Compile Sources
So I had to add them manually.
then I could compile & build successfully.
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MySQL “WITH” clause
...uery
left join mytable as mytable.mycol = col1
where mytable.mycol is null
order by col1
You may want to use a text editor with macro capabilities to convert a list of values to the quoted select union clause.
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How to move the cursor word by word in the OS X Terminal
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It was inconvenient to re-press both keys in order to re-execute the command again. I find it pretty lame to do this in Mac OSX Terminal, compare to the GNOME Terminal.
– Phương Nguyễn
Jun 1 '10 at 2:35
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What are the differences between Generics in C# and Java… and Templates in C++? [closed]
... that Java made the wrong decision or that .NET has better implementations etc. etc.
13 Answers
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Best way to check for nullable bool in a condition expression (if …)
... x is fine in context and is sometimes cleaner; to wit: var openOrders = orders.Where(x=>x.Open ?? false)
– nothingisnecessary
Oct 24 '19 at 16:25
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Best way to synchronize local HTML5 DB (WebSQL Storage, SQLite) with a server (2 way sync) [closed]
...of the last sync (table sync_info). It will also create SQLite triggers in order to watch the INSERT or UPDATE on the tables you want to synchronize (to automatically insert the modified elements in the new_elem table):
DBSYNC.initSync(TABLES_TO_SYNC, webSqlDb, sync_info, 'http://www.myserver.com',...