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How to change MenuItem icon in ActionBar programmatically
...m(R.id.action_settings);
// set your desired icon here based on a flag if you like
settingsItem.setIcon(ContextCompat.getDrawable(this, R.drawable.ic_launcher));
return super.onPrepareOptionsMenu(menu);
}
sha...
Is there a macro recorder for Eclipse? [closed]
...t in the eclipse/downloads/plugins directory (create the plugins directory if it doesn't exist). You can edit macros by going to Windows/Preferences/Practically Macro Options and you can run the macros via a new toolbar that is created.
– gordon613
Mar 30 '17 a...
Cannot drop database because it is currently in use
...tabase and then, to drop it:
Try
SP_WHO to see who connected
and KILL if needed
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Changing the maximum length of a varchar column?
...olumn <<new_datatype>> [NULL | NOT NULL]
But remember to specify NOT NULL explicitly if desired.
ALTER TABLE YourTable ALTER COLUMN YourColumn VARCHAR (500) NOT NULL;
If you leave it unspecified as below...
ALTER TABLE YourTable ALTER COLUMN YourColumn VARCHAR (500);
Then the co...
CSS background-image - What is the correct usage?
...
The path can either be full or relative (of course if the image is from another domain it must be full).
You don't need to use quotes in the URI; the syntax can either be:
background-image: url(image.jpg);
Or
background-image: url("image.jpg");
However, from W3:
So...
Find integer index of rows with NaN in pandas dataframe
... thanks, .nonzero()[0] is better than [i for i, k in enumerate(mask) if k] .)
– Winand
Feb 4 '16 at 6:51
2
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How to create unit tests easily in eclipse [closed]
... plug-in to create tests easily:
highlight the method
press Ctrl+Alt+Shift+U
it will create the unit test for it.
The plug-in is available here. Hope this helps.
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PostgreSQL query to list all table names?
...
If you want list of database
SELECT datname FROM pg_database WHERE datistemplate = false;
If you want list of tables from current pg installation of all databases
SELECT table_schema,table_name FROM information_schema.tab...
我帮儿子用App Inventor 2给遥控车装了"蓝牙大脑"，手机一划车就...
...; ))
第四步：Arduino端解析
Arduino收到数据后：
if (Serial.available() >= 4) {
byte speed = Serial.read();
byte steer = Serial.read();
byte checksum = Serial.read();
byte footer = Serial.read();
if (footer...
Toggle Checkboxes on/off
...14 '10 at 10:56
Frédéric HamidiFrédéric Hamidi
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