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Why isn't String.Empty a constant?
...ing value. We need to call the
String constructor so that the
compiler doesn't mark this as a
literal.
Marking this as a literal would mean
that it doesn't show up as a field
which we can access from native.
I found this information from this handy article at CodeProject.
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Dynamic variable names in Bash
...
Hmm. I'm using bash 4.2.45(2) and declare doesn't list it as an option declare: usage: declare [-afFirtx] [-p] [name[=value] ...]. It seems to be working correctly however.
– fent
Dec 2 '13 at 15:56
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Database Design for Revisions?
...he line, requires surrogate keys and all sorts of other problems.
Design 2 does have problems with schema changes. If you change the Employees table you have to change the EmployeeHistories table and all the related sprocs that go with it. Potentially doubles you schema change effort.
Design 1 wor...
Is key-value observation (KVO) available in Swift?
...VO
Yes and no. KVO works on NSObject subclasses much as it always has. It does not work for classes that don't subclass NSObject. Swift does not (currently at least) have its own native observation system.
(See comments for how to expose other properties as ObjC so KVO works on them)
See the Appl...
SQL Server - transactions roll back on error?
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If one of the inserts fail, or any part of the command fails, does SQL server roll back the transaction?
No, it does not.
If it does not rollback, do I have to send a second command to roll it back?
Sure, you should issue ROLLBACK instead of COMMIT.
If you want to decide whethe...
(grep) Regex to match non-ASCII characters?
...int the non-ASCII characters, and then do a wc -l to find the number. It doesn't have to be grep; I can use any standard Unix regular expression , like Perl , sed , AWK , etc.
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Why is a ConcurrentModificationException thrown and how to debug it
...ng store of the iterator being modified. Whether by another thread of not doesn't matter to the iterator. IMHO it is a poorly named exception since it gives an incorrect impression of the cause.
– Robin
Mar 2 '09 at 15:39
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How to add a custom loglevel to Python's logging facility
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This answer does not work for me. Trying to do a 'logging.debugv' gives an error AttributeError: module 'logging' has no attribute 'debugv'
– Alex
Aug 26 '18 at 9:55
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Using fonts with Rails asset pipeline
... 3.2.1, you can use font_path(...) instead of asset_path(...). This helper does exactly the same thing but it's more clear.
Finally, use your font in your CSS like you declared it in the font-family part. If it was declared capitalized, you can use it like this:
font-family: 'Icomoon';
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What is the difference between association, aggregation and composition?
...- I own an object and I am responsible for its lifetime. When Foo dies, so does Bar
public class Foo {
private Bar bar = new Bar();
}
Aggregation - I have an object which I've borrowed from someone else. When Foo dies, Bar may live on.
public class Foo {
private Bar bar;
Foo(Bar ...