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How to ALTER multiple columns at once in SQL Server
...g tables is a pretty intensive operation. It's disabled by default in SSMS now, and probably for good reason.
– jocull
Nov 10 '17 at 19:29
...
How can I clone an SQL Server database on the same server in SQL Server 2008 Express?
...to create a NewDB, it says Permission denied on .mdf file. I don't need it now, I just needed a backup of the original DB, so I can overwrite the original DB with it later, I'm just curious why I'm getting such error.
– David Ferenczy Rogožan
Oct 6 '15 at 16:0...
Difference between . and : in Lua
...ccessing obj
--> 20
tab.obj:method(10)
--> Accessing obj
--> 10
Now imagine the __index metamethod did more than just printing something. Imagine it increased a counter, logged something to a file or deleted a random user from your database. There's a big difference between doing that twi...
What are some uses of template template parameters?
...lustrative, is no longer an amazing example due to c++11 introducing auto. Now the same function can be written as:
template <class Cont>
void f(Cont &v) {
auto temp = v.back();
v.pop_back();
// Do some work on temp
std::cout << temp << std::endl;
}
which i...
Determine if string is in list in JavaScript
...}
// Result:
0
1
2
blah // Extra member iterated over!
Your code may work now, but the moment someone in the future adds a third-party JavaScript library or plugin that isn't zealously guarding against inherited keys, everything can break.
The old way to avoid that breakage is, during enumeration, ...
How to fix the flickering in User controls
...Turn off WS_CLIPCHILDREN
return parms;
}
}
The child controls will now paint themselves on top of the background image. You might still see them painting themselves one by one, but the ugly intermediate white or black hole won't be visible.
Last but not least, reducing the number of child ...
#ifdef replacement in the Swift language
.... Here's an example:
#if DEBUG
let a = 2
#else
let a = 3
#endif
Now, you must set the "DEBUG" symbol elsewhere, though. Set it in the "Swift Compiler - Custom Flags" section, "Other Swift Flags" line. You add the DEBUG symbol with the -D DEBUG entry.
As usual, you can set a different val...
Reading binary file and looping over each byte
...
# Do stuff with byte.
byte = f.read(1)
python 3.8
From now on thanks to := operator the above code can be written in a shorter way.
with open("myfile", "rb") as f:
while (byte := f.read(1)):
# Do stuff with byte.
...
Validating with an XML schema in Python
... result = self.xmlschema.validate(xml_doc)
return result
Now we can validate all files in the directory as follows:
main.py
import os
from validator import Validator
validator = Validator("path/to/scheme.xsd")
# The directory with XML files
XML_DIR = "path/to/directory"
for fi...
Scala: What is a TypeTag and how do I use it?
All I know about TypeTags is that they somehow replaced Manifests. Information on the Internet is scarce and doesn't provide me with a good sense of the subject.
...