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What's the difference between `1L` and `1`?
...1
typeof(y) # double, twice the memory size
object.size(y) # 840 bytes (on win64)
z <- x+1L
typeof(z) # still integer
object.size(z) # 440 bytes (on win64)
...but also note that working excessively with integers can be dangerous:
1e9L * 2L # Works fine; fast lean and mean!
1e9L * 4L # Ooops...
What is the effect of encoding an image in base64?
...ing, as larger the image as less sense using base64. But consider the following points:
A lot of embedded images in an HTML-File or CSS-File can have similar strings. For PNGs you often find repeated "A" chars. Using gzip (sometimes called "deflate"), there might be even a win on size. But it depe...
How do you use bcrypt for hashing passwords in PHP?
... algorithm. You cannot retrieve the plain text password without already knowing the salt, rounds and key (password). [Source]
How to use bcrypt:
Using PHP >= 5.5-DEV
Password hashing functions have now been built directly into PHP >= 5.5. You may now use password_hash() to create a bcrypt h...
Best way to hide a window from the Alt-Tab program switcher?
...l one of those things I don't know how to do properly. It's easy to hide a window from the taskbar via a property in both Windows Forms and WPF, but as far as I can tell, this doesn't guarantee (or necessarily even affect) it being hidden from the Alt + ↹Tab dialog. I've seen invisible windows...
How can I update npm on Windows?
...
This is the new best way to upgrade npm on Windows.
Run PowerShell as Administrator
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
npm install -g npm-windows-upgrade
npm-windows-upgrade
Note: Do not run npm i -g npm. Instead use npm-windows-upgrade to ...
Unable to load DLL (Module could not be found HRESULT: 0x8007007E)
...
From what I remember on Windows the search order for a dll is:
Current Directory
System folder, C:\windows\system32 or c:\windows\SysWOW64 (for 32-bit process on 64-bit box).
Reading from the Path environment variable
In addition I'd check the d...
How do I copy a string to the clipboard on Windows using Python?
I'm trying to make a basic Windows application that builds a string out of user input and then adds it to the clipboard. How do I copy a string to the clipboard using Python?
...
How to install XNA game studio on Visual Studio 2012?
...
You posted this just as I was sitting here trying to get Windows 8.1/VS2012 to play nicely with XNA. What can I say, it works. Well done and thanks.
– Gareth
Jan 23 '14 at 20:19
...
Replace non-ASCII characters with a single space
...at this is not dead-easy in Python, unless I'm missing something. The following function simply removes all non-ASCII characters:
...
how to install gcc on windows 7 machine?
I have MinGW on my windows 7 machine. I wish to install and use complete gcc for C compiler. I found there is no single pre-compiled ready-made installation file for this purpose. I checked the following page : http://gcc.gnu.org/install/
It is difficult and I find it above my level of understandi...