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Does using “new” on a struct allocate it on the heap or stack?
...tructor (e.g. new Guid()) or a parameterful constructor (e.g. new Guid(someString)). These generate significantly different IL. To understand why, you need to compare the C# and CLI specs: according to C#, all value types have a parameterless constructor. According to the CLI spec, no value types ha...
How to prevent robots from automatically filling up a form?
...t techniques like captcha, 1+1=? stuff work well, but they also present an extra step impeding the free quick use of the application (I'm not looking for anything like that please).
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Insert into … values ( SELECT … FROM … )
...2, someInt, someVarChar )
SELECT table2.column1, table2.column2, 8, 'some string etc.'
FROM table2
WHERE table2.ID = 7;
I've only used this syntax with Access, SQL 2000/2005/Express, MySQL, and PostgreSQL, so those should be covered. It should also work with SQLite3.
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Why doesn't C have unsigned floats?
... same signed or unsigned -- floating point, not so much. Who would do the extra work to support both signed and unsigned floats given the relatively low marginal utility of such a feature?
– ephemient
Feb 5 '09 at 0:42
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What is the memory consumption of an object in Java?
...uld I use a 32- or a 64-bit JVM?, 2012, JDK 1.7)
Boxed types, arrays, and strings
Boxed wrappers have overhead compared to primitive types (from JavaWorld):
Integer: The 16-byte result is a little worse than I expected because an int value can fit into just 4 extra bytes. Using an Integer c...
Check list of words in another string [duplicate]
...nal: and if you want to check that all words from that list are inside the string, just replace any() above with all()
– Nas Banov
Jul 17 '10 at 23:23
17
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How long does it take for GitHub page to show changes after changing index.html
...ew files. If you want to test it (or break a cache) you can append a query string like myfile.jpg?ver=123 and every time you update the string the cache will bust, and you can verify that the CDN is updating.
– Joel Glovier
Dec 19 '16 at 14:10
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Are there conventions on how to name resources?
...widget/container>_<name>
I do the same strategy for any dimens, strings, numbers, and colors I use in those layouts. However, I do try generalizing. e.g if all buttons have a common textColor, I won't prefix the name with the layout. The resource name would be 'button_textColor'. If all t...
What exactly is Arel in Rails 3.0?
...eRecord
No, it isn't. It's a replacement for hand-crafting SQL queries in strings. It is a common query layer that underlies ActiveRecord, but it can also be used as an underpinning for DataMapper, for example.
If it is a replacement for anything, it's a replacement for Ambition. Or, you can think ...
How to convert Strings to and from UTF8 byte arrays in Java
In Java, I have a String and I want to encode it as a byte array (in UTF8, or some other encoding). Alternately, I have a byte array (in some known encoding) and I want to convert it into a Java String. How do I do these conversions?
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