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How to set default value for form field in Symfony2?
...
->add('myfield', 'text', array(
'label' => 'Field',
'empty_data' => 'Default value'
))
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Simple way to create matrix of random numbers
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You can drop the range(len()):
weights_h = [[random.random() for e in inputs[0]] for e in range(hiden_neurons)]
But really, you should probably use numpy.
In [9]: numpy.random.random((3, 3))
Out[9]:
array([[ 0.37052381, 0.03463207, 0.10669077],
[ 0.05...
How to unit test an object with database queries
... as in the following pseudo-code:
class Bar
{
private FooDataProvider _dataProvider;
public instantiate(FooDataProvider dataProvider) {
_dataProvider = dataProvider;
}
public getAllFoos() {
// instead of calling Foo.GetAll() here, we are introducing an extra layer ...
Get list of databases from SQL Server
...uery:
SELECT name FROM master.dbo.sysdatabases
or if you prefer
EXEC sp_databases
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How to resize a custom view programmatically?
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this.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, theSizeIWant));
Problem solved!
NOTE: Be sure to use the parent Layout's LayoutParams. Mine is LinearLayout.LayoutParams!
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Invalid postback or callback argument. Event validation is enabled using '
... One more option: implement IPostBackEventHandler and call js __doPostBack('<%= UniqueId.ToString() %>',arg)
– gdbdable
May 22 '14 at 7:11
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Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...tp://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
>
<!-- Config here. -->
</web-app>
Or, in case you're not on Servlet 3.0+ yet (e.g. Tomcat 6 or older), then remove the @WebServlet annotation.
package com.example;
public cl...
How to change MenuItem icon in ActionBar programmatically
...thod
menu.getItem(0).setIcon(ContextCompat.getDrawable(this, R.drawable.ic_launcher));
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structure vs class in swift language
...mple here code to understand well.
struct SomeStruct {
var a : Int;
init(_ a : Int) {
self.a = a
}
}
class SomeClass {
var a: Int;
init(_ a: Int) {
self.a = a
}
}
var x = 11
var someStruct1 = SomeStruct(x)
var someClass1 = SomeClass(x)
var someStruct2 = someStruct1
var someClass2 = so...
What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
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utf8_general_ci is a very simple — and on Unicode, very broken — collation, one that gives incorrect results on general Unicode text. What it does is:
converts to Unicode normalization form D for canonical decomposition
re...