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What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...taFrame({'Position':[1,2,4,4,4], 'Letter':['a', 'b', 'd', 'e', 'f']})
for idx,row in df.iterrows():
multivalue_dict[row['Position']].append(row['Letter'])
[out]:
>>> print(multivalue_dict)
defaultdict(list, {1: ['a'], 2: ['b'], 4: ['d', 'e', 'f']})
...
Jackson JSON custom serialization for certain fields
...s IntToStringSerializer extends JsonSerializer<Integer> {
@Override
public void serialize(Integer tmpInt,
JsonGenerator jsonGenerator,
SerializerProvider serializerProvider)
throws IOException, JsonProces...
How can you find the height of text on an HTML canvas?
...spec has a context.measureText(text) function that will tell you how much width it would require to print that text, but I can't find a way to find out how tall it is. I know it's based on the font, but I don't know to convert a font string to a text height.
...
What is the @Html.DisplayFor syntax for?
...tes, they're partial views that can be put in a DisplayTemplates folder inside the view folder associated to a controller.
Example:
If you create a view named String.cshtml inside the DisplayTemplates folder of your views folder (e.g Home, or Shared) with the following code:
@model string
@if ...
DynamoDB vs MongoDB NoSQL [closed]
... so there's no need to use a database for this, that's the reason why I decided to choose a noSQL data storage.
8 Answers
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How to restore to a different database in sql server?
...up is done weekly in the scheduler and I get a .bak file. Now I want to fiddle with some data so I need to restore it to a different database - Database2 .
...
JdbcTemplate queryForInt/Long is deprecated in Spring 3.2.2. What should it be replaced by?
...Template are deprecated in Spring 3.2. I can't find out why or what is considered the best practice to replace existing code using these methods.
...
Under what conditions is a JSESSIONID created?
When / what are the conditions when a JSESSIONID is created?
5 Answers
5
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How to detect Safari, Chrome, IE, Firefox and Opera browser?
...nstall an extension. Use feature detection when possible.
Demo: https://jsfiddle.net/6spj1059/
// Opera 8.0+
var isOpera = (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
// Firefox 1.0+
var isFirefox = typeof InstallTrigger !== 'undefin...
Android DialogFragment vs Dialog
...istener in your dialog and then call the handler as appropriate:
public void onClick(.....
if (which == DialogInterface.BUTTON_POSITIVE) {
final Message toSend = Message.obtain(okMessage);
toSend.sendToTarget();
}
}
Edit
And as Message is parcelable you can save it out i...