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How can I use if/else in a dictionary comprehension?
...ue if condition
else something_if_false) for key, value in dict_.items() }
The final if clause acts as a filter, which is different from having the conditional expression.
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An item with the same key has already been added
...ng> and i had a `Duplicate in the key from the database
foreach (var item in myObject)
{
myDictionary.Add(Convert.ToString(item.x),
item.y);
}
item.x had a duplicate value
...
How does one parse XML files? [closed]
...other methods to work with. For example, here. And I think there is no one best method to do this; you always need to choose it by yourself, what is most suitable for you.
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How to remove “Server name” items from history of SQL Server Management Studio
...opdown in the Connect to Server dialog. This is documented in this Connect item and this blog post.
Note that if you have multiple entries for a single server name (e.g. one with Windows and one with SQL Auth), you won't be able to tell which one you're deleting.
...
Line continuation for list comprehensions or generator expressions in python
...al data structures.
new_list = [
{
'attribute 1': a_very_long_item.attribute1,
'attribute 2': a_very_long_item.attribute2,
'list_attribute': [
{
'dict_key_1': attribute_item.attribute2,
'dict_key_2': attribute_item.attribute2
...
Python element-wise tuple operations like sum
...
tuple([item1 + item2 for item1, item2 in zip(a, b)]) would be the equivalent as a list comprehension.
– Adam Parkin
Feb 13 '12 at 21:20
...
Custom circle button
...tor xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="false">
<shape android:shape="oval">
<solid android:color="#fa09ad"/>
</shape>
</item>
<item android:state_pressed="true">
...
What is more efficient? Using pow to square or just multiply it with itself?
...gree with this answer. It'a a valid question to ask about performance. The best performance you can achieve is a valid requirement sometimes, and often the reason someone has used c++ rather than another language. And measuring isn't always a good idea. I might measure bubble sort and quicksort and ...
How to return multiple lines JSX in another return statement in React?
... return (
{[1,2,3].map(function (n) {
return [
<h3>Item {n}</h3>.
<p>Description {n}</p>
]
}}
);
}
Also from React v16.2.0, a new feature called React Fragments is introduced which you can use to wrap multiple elements
render() {
re...
Standard Android Button with a different color
... xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
<shape>
<gradient
android:startColor="@color/yellow1"
android:endColor="@color/yellow2"
android:angle="270" /...