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Object of custom type as dictionary key
...
You need to add 2 methods, note __hash__ and __eq__:
class MyThing:
def __init__(self,name,location,length):
self.name = name
self.location = location
self.length = length
def __hash__(self):
return hash((self.name, self.lo...
Unbalanced calls to begin/end appearance transitions for
...the real view controller, but you must have the tab bar controller present and dismiss.
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Assign output of a program to a variable using a MS batch file
...et VAR=%%i
Note that the first % in %%i is used to escape the % after it and is needed when using the above code in a batch file rather than on the command line. Imagine, your test.bat has something like:
for /f %%i in ('c:\cygwin64\bin\date.exe +"%%Y%%m%%d%%H%%M%%S"') do set datetime=%%i
echo %d...
Possible to access the index in a Hash each loop?
...me thing as (key,value) = arr, putting the first value (the key) into key, and the second into value.
– rampion
Jan 18 '10 at 2:45
1
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Looping through the content of a file in Bash
... effects of trimming leading whitespace, interpreting backslash sequences, and skipping the last line if it's missing a terminating linefeed. If these are concerns, you can do:
while IFS="" read -r p || [ -n "$p" ]
do
printf '%s\n' "$p"
done < peptides.txt
Exceptionally, if the loop body m...
Gradle - getting the latest release version of a dependency
...
Gradle currently does not support Maven's RELEASE (which is rarely used and deprecated) but it does support Ivy's latest.release. However, the general recommendation is to build against exact versions. Otherwise, the build can become a lottery.
...
Windows can't find the file on subprocess.call()
...
When the command is a shell built-in, add a 'shell=True' to the call.
E.g. for dir you would type:
import subprocess
subprocess.call('dir', shell=True)
To quote from the documentation:
The only time you need to specify shell=True ...
Solutions for INSERT OR UPDATE on SQL Server
...ford & @Esteban show general idea but error-prone.
To avoid deadlocks and PK violations you can use something like this:
begin tran
if exists (select * from table with (updlock,serializable) where key = @key)
begin
update table set ...
where key = @key
end
else
begin
insert into tab...
There is no ListBox.SelectionMode=“None”, is there another way to disable selection in a listbox?
...ox, you could use ItemsControl instead. It places items in the ItemsPanel and doesn't have the concept of selection.
<ItemsControl ItemsSource="{Binding MyItems}" />
By default, ItemsControl doesn't support virtualization of its child elements. If you have a lot of items, virtualization can ...
UIButton Long Press Event
...
You can start off by creating and attaching the UILongPressGestureRecognizer instance to the button.
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.button addGestur...