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How to check that an object is empty in PHP?
...MLElement:
If by empty you mean has no properties:
$obj = simplexml_load_file($url);
if ( !$obj->count() )
{
// no properties
}
OR
$obj = simplexml_load_file($url);
if ( !(array)$obj )
{
// empty array
}
If SimpleXMLElement is one level deep, and by empty you actually mean that it ...
Fastest way to download a GitHub project
...management infrastructure that you're wrapped around? The whole multi-user file sharing and versioning universe that you are? Well screw all that, just give me the goodies." I mean, use that button, it's no problem, that's what it's there for, but it's for sure not the predominant use case of the si...
error: ‘uint16_t’ does not name a type - C/C++ - 清泛网 - 专注C/C++及内核技术
...or: ‘uint16_t’ does not name a type#include <stdint.h> 解决。 ** * @file stdint.h * Copyright 2012, 2013 MinGW.org project * * Permission is hereby ...#include <stdint.h> 解决。
/**
* @file stdint.h
* Copyright 2012, 2013 MinGW.org project
*
* Permission is hereby granted, fre...
How to split() a delimited string to a List
...
This will read a csv file and it includes a csv line splitter that handles double quotes and it can read even if excel has it open.
public List<Dictionary<string, string>> LoadCsvAsDictionary(string path)
{
var result...
How do I start a process from C#?
...// Configure the process using the StartInfo properties.
process.StartInfo.FileName = "process.exe";
process.StartInfo.Arguments = "-n";
process.StartInfo.WindowStyle = ProcessWindowStyle.Maximized;
process.Start();
process.WaitForExit();// Waits here for the process to exit.
This method allows fa...
Finding the source code for built-in Python functions?
...ince Python is open source you can read the source code.
To find out what file a particular module or function is implemented in you can usually print the __file__ attribute. Alternatively, you may use the inspect module, see the section Retrieving Source Code in the documentation of inspect.
For ...
How to write a bash script that takes optional input arguments?
...tiple arguments, by analogy with the ls command which can take one or more files or by default lists everything in the current directory:
if [ $# -ge 1 ]
then
files="$@"
else
files=*
fi
for f in $files
do
echo "found $f"
done
Does not work correctly for files with spaces in the path, ...
Split code over multiple lines in an R script
...
For that particular case there is file.path :
File <- file.path("~",
"a",
"very",
"long",
"path",
"here",
"that",
"goes",
"beyond",
"80",
"characters",
"and",
"then",
"some",
"more")
setwd(File)
...
Undo a Git merge that hasn't been pushed yet
...t you back 1 commit.
Be aware that any modified and uncommitted/unstashed files will be reset to their unmodified state. To keep them either stash changes away or see --merge option below.
As @Velmont suggested below in his answer, in this direct case using:
git reset --hard ORIG_HEAD
might...
Changing the current working directory in Java?
...perty() or java -Duser.dir=... does seem to affect subsequent creations of Files, but not e.g. FileOutputStreams.
The File(String parent, String child) constructor can help if you build up your directory path separately from your file path, allowing easier swapping.
An alternative is to set up a s...