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how to check the dtype of a column in python pandas
I need to use different functions to treat numeric columns and string columns. What I am doing now is really dumb:
6 Answer...
clearing a char array c
... memset is probably the most effective way to achieve this.
On the other hand, if you are choosing to view this as a C/C++ null terminated string, setting the first byte to 0 will effectively clear the string.
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Difference between C++03 throw() specifier C++11 noexcept
Is there any difference between throw() and noexcept other than being checked at runtime and compile time, respectively?
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How to check if object has any properties in JavaScript?
...ws:
for(var prop in ad) {
if (ad.hasOwnProperty(prop)) {
// handle prop as required
}
}
It is important to use the hasOwnProperty() method, to determine whether the object has the specified property as a direct property, and not inherited from the object's prototype chain.
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How to auto-reload files in Node.js?
...rvisor is nodemon:
Monitor for any changes in your node.js application and automatically restart the server - perfect for development
To use nodemon:
$ npm install nodemon -g
$ nodemon app.js
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Which is preferred: Nullable.HasValue or Nullable != null?
...eal difference. Just do whichever is more readable/makes more sense to you and your colleagues.
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What is difference between cacerts and keystore?
What's the difference between the two, cacerts and keystore?
4 Answers
4
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Do you use source control for your database items? [closed]
...d never think of writing code without version control in a million years-- and rightly so-- can somehow be completely oblivious to the need for version control around the critical databases their applications rely on. I don't know how you can call yourself a software engineer and maintain a straight...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
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I would suggest an alternative regex, using sub-groups to capture name and value of the parameters individually and re.exec():
function getUrlParams(url) {
var re = /(?:\?|&(?:amp;)?)([^=&#]+)(?:=?([^&#]*))/g,
match, params = {},
decode = function (s) {return decodeURI...
Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...ase of an object that may have nil properties while it's being constructed and configured, but is immutable and non-nil afterwards (NSImage is often treated this way, though in its case it's still useful to mutate sometimes). Implicitly unwrapped optionals would clean up its code a good deal, with r...