大约有 16,380 项符合查询结果（耗时：0.0547秒） [XML]
How can I map True/False to 1/0 in a Pandas DataFrame?
I have a column in python pandas DataFrame that has boolean True/False values, but for further calculations I need 1/0 representation. Is there a quick pandas/numpy way to do that?
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Loop through properties in JavaScript object with Lodash
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Yes you can and lodash is not needed... i.e.
for (var key in myObject.options) {
// check also if property is not inherited from prototype
if (myObject.options.hasOwnProperty(key)) {
var value = myObject.options[key];
}
}
Edit: the accepted answer (_.forOwn()) should be ht...
Is there a way to iterate over a dictionary?
I know NSDictionaries as something where you need a key in order to get a value . But how can I iterate over all keys and values in a NSDictionary , so that I know what keys there are, and what values there are? I know there is something called a for-in-loop in JavaScript . Is there som...
How do I execute a program using Maven?
I would like to have a Maven goal trigger the execution of a java class. I'm trying to migrate over a Makefile with the lines:
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Are Duplicate HTTP Response Headers acceptable?
...aders are allowed by the standard, but I need to know if this will cause compatibility issues.
2 Answers
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Resetting the UP-TO-DATE property of gradle tasks?
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edited Aug 25 '14 at 16:01
Snekse
13.8k88...
Check whether a variable is a string in Ruby
Is there anything more idiomatic than the following?
6 Answers
6
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Grep not as a regular expression
I need to search for a PHP variable $someVar . However, Grep thinks that I am trying to run a regex and is complaining:
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How to list of all the tables defined for the database when using active record?
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Call ActiveRecord::ConnectionAdapters::SchemaStatements#tables. This method is undocumented in the MySQL adapter, but is documented in the PostgreSQL adapter. SQLite/SQLite3 also has the method implemented, but undocumented.
>> ActiveRecord::Base.connection.t...
What is the purpose of the Visual Studio Hosting Process?
When debugging a program using Visual Studio you are given the option to Enable the Visual Studio hosting process . What is this purpose of this option and what effect does it have?
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