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Read first N lines of a file in python
... one won't work if the file doesn't have at least N lines. You are best to measure the performance against some typical data you will be using it with.
– John La Rooy
Nov 20 '09 at 0:47
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Run an app on a multiple devices automatically in Android Studio
...When I try to run the app I'm developing, the Android Studio always prompt me to choose the device. Is there any way to deploy the app on a multiple devices automatically - by clicking Run or even better with a shortcut?
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Get local IP address in node.js
...nd in os.networkInterfaces(), — an object, that maps network interface names to its properties (so that one interface can, for example, have several addresses):
'use strict';
const { networkInterfaces } = require('os');
const nets = networkInterfaces();
const results = Object.create(null); // or...
Replace whitespaces with tabs in linux
...D(1) User Commands UNEXPAND(1)
NAME
unexpand - convert spaces to tabs
SYNOPSIS
unexpand [OPTION]... [FILE]...
DESCRIPTION
Convert blanks in each FILE to tabs, writing to standard output. With
no FILE, or when FILE is -, read s...
How can I make the Android emulator show the soft keyboard?
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I found out how to do this on the Android emulator itself (Menu, "Settings" App - not the settings of the emulator outside). All you need to do is:
open settings app -> Language & Input -> Go to the "Keyboard & Input Methods -> click Default
This will bring up a Dial...
How do you implement a re-try-catch?
Try-catch is meant to help in the exception handling. This means somehow that it will help our system to be more robust: try to recover from an unexpected event.
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Get index of array element faster than O(n)
...ere any other way, rather then call Array#index to get it? The problem comes from the need of keeping really huge array and calling Array#index enormous amount of times.
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presentViewController and displaying navigation bar
...yViewController *myViewController = [[MyViewController alloc] initWithNibName:nil bundle:nil];
UINavigationController *navigationController =
[[UINavigationController alloc] initWithRootViewController:myViewController];
//now present this navigation controller modally
[self presentViewControl...
How do you check what version of SQL Server for a database using TSQL?
...ered Sep 12 '08 at 16:33
Joe KuemerleJoe Kuemerle
6,14011 gold badge1919 silver badges1818 bronze badges
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How can I convert a string to a number in Perl?
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@OrangeDog the OP edited the question (some months after this answer was posted) - the original question actually had floating point numbers in it.
– Alnitak
Mar 14 '12 at 10:46
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