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Creating a simple XML file using python
... indicate that:
LXML clearly wins for serializing (generating) XML
As a side-effect of implementing proper parent traversal, LXML is a bit slower than cElementTree for parsing.
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Android: How to enable/disable option menu item on button click?
...change the Options Menu any time after
it's first created, you must override
the onPrepareOptionsMenu() method.
This passes you the Menu object as it
currently exists. This is useful if
you'd like to remove, add, disable, or
enable menu items depending on the
current state of your appl...
How to find the size of an array in postgresql
...ing PostgreSQL 9.4 or higher, you can use cardinality:
SELECT cardinality(id) FROM example;
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ASP.NET Repeater bind List
...t null values you may want to refactor to this (.NET 6+)
<asp:Repeater ID="repeater" runat="server">
<ItemTemplate>
<%# Container.DataItem?.ToString() ?? string.Empty%>
</ItemTemplate>
</asp:Repeater>
Note if you are using less than .NET 6 you cannot ...
The best way to remove duplicate values from NSMutableArray in Objective-C?
...rray *copy = [mutableArray copy];
NSInteger index = [copy count] - 1;
for (id object in [copy reverseObjectEnumerator]) {
if ([mutableArray indexOfObject:object inRange:NSMakeRange(0, index)] != NSNotFound) {
[mutableArray removeObjectAtIndex:index];
}
index--;
}
[copy release];
...
getString Outside of a Context or Activity
...tput. For instance, in this case I am generating an email from a model outside of the activity.
13 Answers
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Maven – Always download sources and javadocs
...e ... -->
<profiles>
<profile>
<id>downloadSources</id>
<properties>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</proper...
PostgreSQL create table if not exists
...to work around it:
CREATE OR REPLACE FUNCTION create_mytable()
RETURNS void
LANGUAGE plpgsql AS
$func$
BEGIN
IF EXISTS (SELECT FROM pg_catalog.pg_tables
WHERE schemaname = 'myschema'
AND tablename = 'mytable') THEN
RAISE NOTICE 'Table myschema.mytable a...
Objective-C: Property / instance variable in category
... do exactly what you're wanting:
#import <objc/runtime.h>
static void *MyClassResultKey;
@implementation MyClass
- (NSString *)test {
NSString *result = objc_getAssociatedObject(self, &MyClassResultKey);
if (result == nil) {
// do a lot of stuff
result = ...;
objc_setAss...
Command line for looking at specific port
... Also worth mentioning the -o flag (i.e. -nao here) to include the PID of the process using the port.
– Steve Chambers
Nov 28 '17 at 10:29
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