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Set transparent background using ImageMagick and commandline prompt
Suppose you have any image (PNG or JPG).
This image has a white background and I need to make this background transparent.
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Setting the filter to an OpenFileDialog to allow the typical image formats?
I have this code, how can I allow it to accept all typical image formats? PNG, JPEG, JPG, GIF?
11 Answers
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How can I clear or empty a StringBuilder? [duplicate]
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Two ways that work:
Use stringBuilderObj.setLength(0).
Allocate a new one with new StringBuilder() instead of clearing the buffer.
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How to fade to display: inline-block
... it doesn't work for me... applied on a div with an initial display style set to none using a class. Inspecting the element I see that for some milliseconds, right after calling the fadeIn, it has inline-block in its style, then style is set to block. with Simon suggestion the effect is not nice, a...
Dynamic validation and name in a form with AngularJS
...ame attribute of input elements using interpolation, you have to wrap each set of repeated inputs in an ngForm directive and nest these in an outer form element." Each nested form has its own scope which allows this to work.
– Noremac
Dec 5 '13 at 18:36
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Matplotlib transparent line plots
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After I plotted all the lines, I was able to set the transparency of all of them as follows:
for l in fig_field.gca().lines:
l.set_alpha(.7)
EDIT: please see Joe's answer in the comments.
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How to delete shared preferences data from App in Android
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Removing all preferences:
SharedPreferences settings = context.getSharedPreferences("PreferencesName", Context.MODE_PRIVATE);
settings.edit().clear().commit();
Removing single preference:
SharedPreferences settings = context.getSharedPreferences("PreferencesName", C...
django change default runserver port
...invoking the runserver command:
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "project.settings.dev")
import django
django.setup()
# Override default port for `runserver` command
from django.core.management.commands.runserver import Command as runs...
Android studio - Failed to find target android-18
... in Android Studio (0.8.1):
Right click on project name and open Module Settings
Verify SDK Locations
Verify Gradle and Plugin Versions (Review the error message hints
for the proper version to use)
On the app Module set the Compile SDK Version to android-L (latest)
Set the Build Tools version ...
Cannot change column used in a foreign key constraint
...not be the same. For
nonbinary (character) string columns, the character set and collation
must be the same.
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