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Do the JSON keys have to be surrounded by quotes?
...rks. This is to make it simpler and to avoid having to have another escape method for javascript reserved keywords, ie {for:"foo"}.
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maximum value of int
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In C++:
#include <limits>
then use
int imin = std::numeric_limits<int>::min(); // minimum value
int imax = std::numeric_limits<int>::max();
std::numeric_limits is a template type which can be instantiated with other types:
float fmin = std::numeric_limits<floa...
Can you center a Button in RelativeLayout?
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android:layout_centerHorizontal="true"
Exactly like this, it works for me:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ff...
Difference between View and table in sql
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A table contains data, a view is just a SELECT statement which has been saved in the database (more or less, depending on your database).
The advantage of a view is that it can join data from several tables thus creating a new view of it. Say you have a database with salaries...
How do you prevent install of “devDependencies” NPM modules for Node.js (package.json)?
... along other dependencies when run inside a package directory, in a development environment (the default).
Use npm install --only=prod (or --only=production) to install only dependencies, and not devDependencies,regardless of the value of the NODE_ENV environment variable.
Source: npm docs
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Hide text using css
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long titles will have an issue with this method since only the text before word-wrap is indented, and the W3C spec doesn't specify a situation for negative indent so this could have unpredictable results
– Chris Farmiloe
Jan 23...
Aborting a shell script if any command returns a non-zero value?
...the beginning of the script:
set -e
This will cause the shell to exit immediately if a simple command exits with a nonzero exit value. A simple command is any command not part of an if, while, or until test, or part of an && or || list.
See the bash(1) man page on the "set" internal com...
Closing Database Connections in Java
...ng your Connection, you need to explicitly close it by calling its close() method in order to release any other database resources (cursors, handles, etc) the connection may be holding on to.
Actually, the safe pattern in Java is to close your ResultSet, Statement, and Connection (in that order) i...
Execute code when Django starts ONCE only?
...dleware class that I want to execute only once at startup, to initialise some other arbritary code. I've followed the very nice solution posted by sdolan here , but the "Hello" message is output to the terminal twice . E.g.
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How do I force Sublime Text to indent two spaces per tab?
Is there a way to force Sublime Text 2 to always indent two spaces per tab when working with Ruby files?
6 Answers
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