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Is there any boolean type in Oracle databases?
...9 and that NUMBER: Typ=2 Len=2: 193,2 At least in 12c, NUMBER(1) can use 2 bytes...
– phil_w
Apr 19 '16 at 17:29
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Animate visibility modes, GONE and VISIBLE
...
Visibility change itself can be easy animated by overriding setVisibility method. Look at complete code:
public class SimpleViewAnimator extends FrameLayout
{
private Animation inAnimation;
private Animation outAnimation;
public SimpleViewAnimator(Context ...
extract part of a string using bash/cut/split
...mat as file-name matching, so * (any characters) is common, often followed by a particular symbol like / or .
Examples:
Given a variable like
MYVAR="users/joebloggs/domain.com"
Remove the path leaving file name (all characters up to a slash):
echo ${MYVAR##*/}
domain.com
Remove the file na...
How to override to_json in Rails?
... of as_json. As you can see in the ActiveRecord::Serialization docs (api.rubyonrails.org/classes/ActiveRecord/…), there is very little (no) documentation for this. I will give this a try :)
– maček
Apr 4 '10 at 17:53
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Core Data vs SQLite 3 [closed]
...lowing an app to work with a graph that would not entirely fit into memory by faulting objects in and out of memory as necessary. Core Data also manages constraints on properties and relationships and maintains reference integrity (e.g. keeping forward and backward links consistent when objects are ...
const char* concatenation
...ointing to char constants. You cannot change the char constants pointed to by these pointers. So anything like:
strcat(one,two); // append string two to string one.
will not work. Instead you should have a separate variable(char array) to hold the result. Something like this:
char result[100]; ...
In Vim, is there a way to paste text in the search line?
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You can insert the contents of a numbered or named register by typing CTRLR {0-9a-z"%#:-=.}. By typing CTRL-R CTRL-W you can paste the current word under the cursor. See:
:he cmdline-editing
for more information.
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Displaying the #include hierarchy for a C++ file in Visual Studio
... our Include issues and drop our compile time from 50 minutes to 8 minutes by pruning out large chunks of includes we weren't using.
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'IF' in 'SELECT' statement - choose output value based on column values
...outh America'
ELSE 'Europe' END AS Continent
FROM Suppliers
ORDER BY CompanyName;
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Enums and Constants. Which to use when?
...reas an enumeration indicates that something can be one of the set defined by the enum.
b: A defined enumeration can help you with type checking when used as an argument. Constants are just values, so they don't provide any additional semantic information.
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