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'printf' vs. 'cout' in C++
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360
I'm surprised that everyone in this question claims that std::cout is way better than printf, ev...
What does FrameLayout do?
...ndroid:layout_gravity="center_vertical"
android:layout_marginTop="70dp"
android:background="@android:color/holo_blue_light"
android:padding="10dp"
android:text="TextView placed at the top of the Imageview"
android:textColor="@android:color/white"
andro...
Simultaneously merge multiple data.frames in a list
....frame(i = c("c","d","a"), l = 7:9, stringsAsFactors=FALSE)
Update June 2018: I divided the answer in three sections representing three different ways to perform the merge. You probably want to use the purrr way if you are already using the tidyverse packages. For comparison purposes below, you'll...
How to strike through obliquely with css
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190
There is a hacky way to do this, using the :before pseudo element. You give the :before a border...
A migration to add unique constraint to a combination of columns
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answered Jul 30 '10 at 9:45
Robert SpeicherRobert Speicher
14.5k55 gold badges3636 silver badges4343 bronze badges
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Why does Java switch on contiguous ints appear to run faster with added cases?
...gram logic. Part of this code involves multiplying double variables by 10 raised to arbitrary non-negative int exponent s. One fast way (edit: but not the fastest possible, see Update 2 below) to get the multiplied value is to switch on the exponent :
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What is “X-Content-Type-Options=nosniff”?
...re now respecting this header, including Chrome/Chromium, Edge, IE >= 8.0, Firefox >= 50 and Opera >= 13. See :
https://blogs.msdn.com/b/ie/archive/2008/09/02/ie8-security-part-vi-beta-2-update.aspx?Redirected=true
Sending the new X-Content-Type-Options response header with the value
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Git interactive rebase no commits to pick
...rigin/master
or
# Edit some of the last ten commits
git rebase -i HEAD~10 # Note that ~10 uses a tilde("~") not a dash("-"_) !
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Is #pragma once part of the C++11 standard?
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109
#pragma once is not standard. It is a widespread (but not
universal) extension, which can be u...
How to create a new database using SQLAlchemy?
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101
On postgres, three databases are normally present by default. If you are able to connect as a ...