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“Java DateFormat is not threadsafe” what does this leads to?
...Java DateFormat not being thread safe and I understand the concept theoretically.
11 Answers
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Detecting when the 'back' button is pressed on a navbar
...wController has TRUE value when I'm poping the navigation stack programmatically using popToRootViewControllerAnimated - without any touch on the back button. Should I downvote your answer? (the subject says "'back' button is pressed on a navbar")
– kas-kad
Jan...
What is a NullPointerException, and how do I fix it?
...sign it to the variable before trying to use the contents of the variable (called dereferencing). So you are pointing to something that does not actually exist.
Dereferencing usually happens when using . to access a method or field, or using [ to index an array.
If you attempt to dereference num BEF...
A simple scenario using wait() and notify() in java
...simple scenario i.e. tutorial that suggest how this should be used, specifically with a Queue?
6 Answers
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What “things” can be injected into others in Angular.js?
... for telling Angular how to create new injectable things; these things are called services. Services are defined by things called providers, which is what you're creating when you use $provide. Defining a provider is done via the provider method on the $provide service, and you can get hold of the $...
var self = this?
Using instance methods as callbacks for event handlers changes the scope of this from "My instance" to "Whatever just called the callback" . So my code looks like this
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How to generate a random int in C?
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Note: Don't use rand() for security. If you need a cryptographically secure number, see this answer instead.
#include <time.h>
#include <stdlib.h>
srand(time(NULL)); // Initialization, should only be called once.
int r = rand(); // Returns a pseudo-random integer be...
Can I invoke an instance method on a Ruby module without including it?
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If a method on a module is turned into a module function you can simply call it off of Mods as if it had been declared as
module Mods
def self.foo
puts "Mods.foo(self)"
end
end
The module_function approach below will avoid breaking any classes which include all of Mods.
module Mods
...
Set the location in iPhone Simulator
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Run project in iPhone Simulator
Create in TextEdit file following file, call it MyOffice for example. Make extension as .gpx
<?xml version="1.0"?> <gpx version="1.0" creator="MyName"> <wpt lat="53.936166" lon="27.565370"> <name>MyOffice</name> </wpt> </gpx...
Intel SMID指令集编译错误: inlining failed in call to always_inline \'x...
Intel SMID指令集编译错误: inlining failed in call to always_inline 'xxx': target specific option mismatch xxxintel_smid_compile_error最近在使用CPU指令集优化代码的时候，编译出错，报错如下： usr lib64 gcc x86_64-suse-linux 7 include avx2intrin h:252:1: error: inlining ...