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Add new row to dataframe, at specific row-index, not appended?
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Here's a solution that avoids the (often slow) rbind call:
existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4))
r <- 3
newrow <- seq(4)
insertRow <- function(existingDF, newrow, r) {
existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),...
Rebuild or regenerate 'ic_launcher.png' from images in Android Studio
When one first creates a new project, that dialog lets you point
to some external .PNG file, and then when that dialog completes,
it generates 4 different pixel-sizes of images for use as
a launcher-icon.
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Adding new column to existing DataFrame in Python pandas
I have the following indexed DataFrame with named columns and rows not- continuous numbers:
24 Answers
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Is the 'type' attribute necessary for tags?
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For HTML 4.x, the type attribute is required. Source
This attribute specifies the scripting language of the element's contents and overrides the default scripting language. The scripting language is specified as a content type (e.g....
Responsive css background images
... responsive. Unfortunately I really don't have any idea on how to do this except for one thing that I can think of but it's quite a workaround. Creating multiple images and then using css screen size to change the images but I wanna know if there is a more practical way in order to achieve this.
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Does Java have a complete enum for HTTP response codes?
... is no such a thing as "complete list", as status codes can be and do get extended.
– Julian Reschke
Mar 22 '12 at 7:14
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ImportError: DLL load failed: %1 is not a valid Win32 application. But the DLL's are there
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Unofficial Windows Binaries for Python Extension Packages
you can find any python libs from here
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When should I use a composite index?
For example, I have a homes table:
9 Answers
9
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/usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not found
How can I get GLIBCXX_3.4.15 in Ubuntu? I can't run some programs that I'm compiling.
19 Answers
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Types in MySQL: BigInt(20) vs Int(20)
...an odd choice by the developers - as I would have guessed it was width + max value, or bits/etc.
– Sh4d0wsPlyr
May 25 '15 at 23:51
31
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