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How do I calculate square root in Python?
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0
If one of the numbers is a float, it works as expected:
>>> 1.0/2
0.5
>>> 16**(1.0/2)
4.0
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Can an Android Toast be longer than Toast.LENGTH_LONG?
...TYPE_TOAST;
params.setTitle("ToastHelper");
params.alpha = 1.0f;
// params.buttonBrightness = 1.0f;
params.packageName = context.getPackageName();
params.windowAnimations = android.R.style.Animation_Toast;
}
@SuppressWarnings("deprecation")
@andro...
How can I delay a method call for 1 second?
...
You can also:
[UIView animateWithDuration:1.0
animations:^{ self.view.alpha = 1.1; /* Some fake chages */ }
completion:^(BOOL finished)
{
NSLog(@"A second lapsed.");
}];
This case you have to fake some changes to some view to g...
Multi-gradient shapes
...s what I've got for now:
green_horizontal_gradient.xml
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle"
>
<corners
android:radius="3dp"
/>
<gradient
an...
What is the ideal data type to use when storing latitude / longitude in a MySQL database?
... Bytes Resolution
Deg*100 (SMALLINT) 4 1570 m 1.0 mi Cities
DECIMAL(4,2)/(5,2) 5 1570 m 1.0 mi Cities
SMALLINT scaled 4 682 m 0.4 mi Cities
Deg*10000 (MEDIUMINT) 6 16 m 52 ft Houses/Businesses
DECIMAL(6,4)/(7,4) 7 16...
Fragment Inside Fragment
...ameLayout to your activity to hold the parent fragment.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layou...
Android: allow portrait and landscape for tablets, but force portrait on phone?
...ols.xml or whatever (file names don't matter here):
<?xml version="1.0" encoding="utf-8"?>
<resources>
<bool name="portrait_only">true</bool>
</resources>
Put this one in res/values-sw600dp and res/values-xlarge:
<?xml version="1.0" encodi...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...records
[root@localhost mongodb]# cat students_csv.dat
classid,name,age
1.0,"kobe",20.0
1.0,"nash",23.0
2.0,"james",18.0
2.0,"wade",19.0
2.0,"bosh",19.0
2.0,"allen",25.0
1.0,"howard",19.0
1.0,"paul",22.0
2.0,"shane",24.0
参数说明：
-csv：指明要导出为csv格式
-f：指明需...
App.Config Transformation for projects which are not Web Projects in Visual Studio?
...rm is a .NET plugin, so you can make
your own.
<?xml version="1.0" ?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</...
Android adding simple animations while setvisibility(view.Gone)
...view.animate().alpha(0.0f);
This fades it back in:
view.animate().alpha(1.0f);
This moves a View down by its height:
view.animate().translationY(view.getHeight());
This returns the View to its starting position after it has been moved somewhere else:
view.animate().translationY(0);
You ca...