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How to speed up insertion performance in PostgreSQL
...ack-on-errors to "Transaction" by specifying Protocol=-1 in the connection string. By default psqlodbc uses "Statement" level, which creates a SAVEPOINT for each statement rather than an entire transaction, making inserts slower.
Use server-side prepared statements by specifying UseServerSidePrepare...
Draw text in OpenGL ES
...aceView. This is slow and bad, but the most direct approach.
Render common strings to textures, and simply draw those textures. This is by far the simplest and fastest, but the least flexible.
Roll-your-own text rendering code based on a sprite. Probably second best choice if 2 isn't an option. A go...
How can I cast int to enum?
...
From an int:
YourEnum foo = (YourEnum)yourInt;
From a string:
YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);
// The foo.ToString().Contains(",") check is necessary for enumerations marked with an [Flags] attribute
if (!Enum.IsDefined(typeof(YourEnum), foo) ...
How to use unicode characters in Windows command line?
...egistry key HKEY_CURRENT_USER\Software\Microsoft\Command Processor and add String value Autorun = chcp 65001.
Or you can use this small Batch-Script for the most common code pages.
@ECHO off
SET ROOT_KEY="HKEY_CURRENT_USER"
FOR /f "skip=2 tokens=3" %%i in ('reg query HKEY_LOCAL_MACHINE\SYSTEM\C...
Client to send SOAP request and receive response
...le.WaitOne();
// get the response from the completed web request.
string soapResult;
using (WebResponse webResponse = webRequest.EndGetResponse(asyncResult))
{
using (StreamReader rd = new StreamReader(webResponse.GetResponseStream()))
{
soapResult = rd.R...
Can “using” with more than one resource cause a resource leak?
... for your code:
.method private hidebysig static
void Main (
string[] args
) cil managed
{
// Method begins at RVA 0x2050
// Code size 74 (0x4a)
.maxstack 2
.entrypoint
.locals init (
[0] class [System.Drawing]System.Drawing.Font font3,
[1] clas...
How to import an excel file in to a MySQL database
... to import spreadsheet data into a MySQL database that doesn't rely on any extra software. Let's assume you want to import your Excel table into the sales table of a MySQL database named mydatabase.
Select the relevant cells:
Paste into Mr. Data Converter and select the output as MySQL:
Change...
How to call a Parent Class's method from Child Class in Python?
...y haven't been overwritten.
e.g. in python 3:
class A():
def bar(self, string):
print("Hi, I'm bar, inherited from A"+string)
class B(A):
def baz(self):
self.bar(" - called by baz in B")
B().baz() # prints out "Hi, I'm bar, inherited from A - called by baz in B"
yes, this may be fa...
Why should I use a pointer rather than the object itself?
...eir destructors called once they go out of scope. For example:
{
std::string s;
}
// s is destroyed here
On the other hand, if you use a pointer dynamically allocated, its destructor must be called manually. delete calls this destructor for you.
{
std::string* s = new std::string;
}
dele...
How to hash some string with sha256 in Java?
How can I hash some string with sha256 in Java? Does anybody know of any free library for this?
15 Answers
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