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Are there any downsides to passing structs by value in C, rather than passing a pointer?
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For small structs (eg point, rect) passing by value is perfectly acceptable. But, apart from speed, there is one other reason why you should be careful passing/returning large structs by value: Stack space.
A lot of C programming ...
write a shell script to ssh to a remote machine and execute commands
...ame hostname "pwd; ls"
This will disable the host key check and automatically add the host key to the list of known hosts. If you do not want to have the host added to the known hosts file, add the option -o UserKnownHostsFile=/dev/null.
Note that this disables certain security checks, for exampl...
How to start working with GTest and CMake
...that I just tested. It downloads directly from the web, either a fixed tarball, or the latest subversion directory.
cmake_minimum_required (VERSION 3.1)
project (registerer)
##################################
# Download and install GoogleTest
include(ExternalProject)
ExternalProject_Add(gtest
...
How to select only the records with the highest date in LINQ
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@JasonL, no. The First() call should apply to the g.Order... expression (subquery).
– Mehrdad Afshari
Aug 29 '13 at 8:04
1
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Import / Export database with SQL Server Server Management Studio
...rver Management Studio Express, follow the steps below:
Download and install Microsoft SQL Server 2008 Management Studio Express from the Microsoft web site: http://www.microsoft.com/en-us/download/details.aspx?id=7593
After Microsoft SQL Server Management Studio Express has been installed, launch...
What does the git index contain EXACTLY?
...ns an article on what an index includes:
The index is a binary file (generally kept in .git/index) containing a sorted list of path names, each with permissions and the SHA1 of a blob object; git ls-files can show you the contents of the index:
$ git ls-files --stage
100644 63c918c667fa005ff12ad89...
Build vs new in Rails 3
...ng a new Client object from the clients collection, and so it can automatically set the firm_id to some_firm.id, whereas the docs are calling Client.new which has no knowledge of any Firm's id at all, so it needs the firm_id passed to it.
The only difference between some_firm.clients.new and some_f...
@synthesize vs @dynamic, what are the differences?
...ors. If you implement the accessors yourself within the class then you normally do not use @dynamic.
Super class:
@property (nonatomic, retain) NSButton *someButton;
...
@synthesize someButton;
Subclass:
@property (nonatomic, retain) IBOutlet NSButton *someButton;
...
@dynamic someButton;
...
How to display Base64 images in HTML?
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answered Dec 9 '16 at 10:14
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Difference between Visual Basic 6.0 and VBA
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For nearly all programming purposes, VBA and VB 6.0 are the same thing.
VBA cannot compile your program into an executable binary. You'll always need the host (a Word file and MS Word, for example) to contain and execute your project. ...