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Is there a “goto” statement in bash?
...ash Reference Manual for information about the control structures that do em>x m>ist. In particular, note the mention of break and continue, which aren't as flem>x m>ible as goto, but are more flem>x m>ible in Bash than in some languages, and may help you achieve what you want. (Whatever it is that you want . . .)...
How do I check if a directory em>x m>ists? “is_dir”, “file_em>x m>ists” or both?
I want to create a directory if it does'nt em>x m>ist already.
12 Answers
12
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detach all packages while working in R
... may be helpful to convert loaded only names(sessionInfo()$loadedOnly) to em>x m>plicitly attached packages first, and then detach the packages, as so.
lapply(names(sessionInfo()$loadedOnly), require, character.only = TRUE)
invisible(lapply(paste0('package:', names(sessionInfo()$otherPkgs)), detach, char...
Close Window from ViewModel
... can pass the window to your ViewModel using the CommandParameter. See my Em>x m>ample below.
I've implemented an CloseWindow Method which takes a Windows as parameter and closes it. The window is passed to the ViewModel via CommandParameter. Note that you need to define an m>x m>:Name for the window which s...
Passing an array by reference
...
It's a syntam>x m> for array references - you need to use (&array) to clarify to the compiler that you want a reference to an array, rather than the (invalid) array of references int & array[100];.
EDIT: Some clarification.
void fo...
Redefining NULL
I'm writing C code for a system where address 0m>x m>0000 is valid and contains port I/O. Therefore, any possible bugs that access a NULL pointer will remain undetected and at the same time cause dangerous behaviour.
...
How to round a number to n decimal places in Java
...hod - i.e. if the decimal to be rounded is 5, it always rounds up to the nem>x m>t number. This is the standard method of rounding most people em>x m>pect in most situations.
...
REDHAT 6.4 m>X m>64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
REDHAT 6.4 m>X m>64下ORACLE 11GR2静默安装前言在某些情况下，我们不具备桌面条件，只能在命令行窗口下安装oracle第一REDHAT6.4安装1.2虚拟机安装REDHAT名称随便自己起我没有外部存储...前言
在某些情况下，我们不具备桌面条件，只能在命...
What's wrong with overridable method calls in constructors?
...tion performed by the subclass constructor, the method will not behave as em>x m>pected.
Here's an em>x m>ample to illustrate:
public class ConstructorCallsOverride {
public static void main(String[] args) {
abstract class Base {
Base() {
overrideMe();
}...
What is difference between functional and imperative programming languages?
...ese statements are said to change the state of the program as each one is em>x m>ecuted in turn.
Em>x m>amples:
Java is an imperative language. For em>x m>ample, a program can be created to add a series of numbers:
int total = 0;
int number1 = 5;
int number2 = 10;
int number3 = 15;
total = number1 + number2...