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reducing number of plot ticks

... df ( pandas.DataFrame ) with datetime index [2019-01-01, ...2019-11-01], call ax = df.plot() , return a figure object . call ax.xaxis.set_major_locator(plt.MaxNLocator(3)) only show first 3 index [2019-01-01, 2019-01-02, 2019-01-03] . – Mithril Nov 4 '...
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How to sort a dataframe by multiple column(s)

... as speedy as the base R commands with their convoluted machinations. Typically brilliant Hadley Wickham work. My only gripe with it is that it breaks the standard R nomenclature where sorting objects get called by sort(object), but I understand why Hadley did it that way due to issues discussed i...
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Java Security: Illegal key size or default parameters?

...ty (crypto.policy) is set in the java.security file, or has been set dynamically by using the Security.setProperty() call before the JCE framework has been initialized, that setting will be honored. By default, the property will be undefined. – Marcin Kłopotek ...
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How to inspect FormData?

...foo, bar)To take any number of argument you could use the apply method and call it as such: console.log.apply(console, array). But there is a new ES6 way to apply arguments with spread operator and iteratorconsole.log(...array). Knowing this, And the fact that FormData and both array's has a Symbol...
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UIStatusBarStyle PreferredStatusBarStyle does not work on iOS 7

...s because the UINavigationController’s preferredStatusBarStyle doesn’t call through to the ViewController it hosts, and instead just returns based on its navigationBarStyle. – mxcl Oct 16 '13 at 13:51 ...
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input() error - NameError: name '…' is not defined

...; input("Enter your name: ") Enter your name: dummy Traceback (most recent call last): File "<input>", line 1, in <module> File "<string>", line 1, in <module> NameError: name 'dummy' is not defined Security considerations with Python 2.7's input: Since whatever user t...
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event.preventDefault() vs. return false

...return false from within a jQuery event handler is effectively the same as calling both e.preventDefault and e.stopPropagation on the passed jQuery.Event object. e.preventDefault() will prevent the default event from occuring, e.stopPropagation() will prevent the event from bubbling up and return ...
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How can I use an http proxy with node.js http.Client?

I want to make an outgoing HTTP call from node.js, using the standard http.Client . But I cannot reach the remote server directly from my network and need to go through a proxy. ...
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What's the best way of scraping data from a website? [closed]

... programming interface or another mechanism to access that data programmatically. 2 Answers ...
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Catch a thread's exception in the caller thread in Python

I'm very new to Python and multithreaded programming in general. Basically, I have a script that will copy files to another location. I would like this to be placed in another thread so I can output .... to indicate that the script is still running. ...