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How to drop a list of rows from Pandas dataframe?
...ataframe.
Example:
Suppose you have a dataframe df which as many columns including 'Age' which is an integer. Now let's say you want to drop all the rows with 'Age' as negative number.
df_age_negative = df[ df['Age'] < 0 ] # Step 1
df = df.drop(df_age_negative.index, axis=0) # Step 2
Hope this...
What's the difference between ng-model and ng-bind
...nt (ng-valid, ng-invalid,
ng-dirty, ng-pristine, ng-touched, ng-untouched) including
animations.
Registering the control with its parent form.
ngBind
The ngBind attribute tells Angular to replace the text content of the specified HTML element with the value of a given expression, and to update the...
Understanding repr( ) function in Python
...asking here. The text single ' and double " quotes, when run through repr, includes escapes for one kind of quote. Of course it does, otherwise it wouldn't be a valid string literal by Python rules. That's precisely what you asked for by calling repr.
Also note that the eval(repr(x)) == x analogy i...
How to check if a String is numeric in Java
...
reinvent the wheel because you don't include a whole library because you need a 3 line function in one place.
– dalvarezmartinez1
Sep 18 '14 at 12:34
...
Mockito - difference between doReturn() and when()
...you can't use when/thenReturn. Stubbing void methods is one such. Others include use with Mockito spies, and stubbing the same method more than once.
One thing that when/thenReturn gives you, that doReturn/when doesn't, is type-checking of the value that you're returning, at compile time. Howeve...
ASP.NET: This method cannot be called during the application's pre-start initialization stage
...accidentally copied a .cshtml into the root of my project. It wasn't even included in the project. Deleted that and the error went away. This was with MVC3 on IIS7. I imagine some of the people getting this problem are in the same boat.
...
Naming convention for utility classes in Java
... is an interface or a class you don't control. Examples of that in the JDK include Collections and Executors. It's also the convention used in Google Collections.
When you're dealing with a class you have control over, I'd say utility methods belong on the class itself generally.
...
What is the meaning of polyfills in HTML5?
...
Yes: "Many fixes including PNG transparency, CSS styles/selectors, rendering bug fixes, etc." It's adding this functionality via javascript which the browser does not already support.
– Calvin Froedge
A...
Vim - how to run a command immediately when starting vim?
... *VimEnter*
VimEnter After doing all the startup stuff, including
loading .vimrc files, executing the "-c cmd"
arguments, creating all windows and loading
the buffers in them.
Then, just place th...
How to get names of enum entries?
... code you posted will work; it will print out all the members of the enum, including the values of the enum members. For example, the following code:
enum myEnum { bar, foo }
for (var enumMember in myEnum) {
console.log("enum member: ", enumMember);
}
Will print the following:
Enum member: 0
En...