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Tools for analyzing performance of a Haskell program
...0.8% of time. So no need to worry that allocation is the problem.
Time Profiles
Getting a time profile for your program is straight forward: compile with -prof -auto-all
$ ghc -O2 --make A.hs -prof -auto-all
[1 of 1] Compiling Main ( A.hs, A.o )
Linking A ...
And, for N=200:
$ t...
Java Reflection: How to get the name of a variable?
...the "Update" section below.
Complete information is often stored in class files. One compile-time optimization is to remove it, saving space (and providing some obsfuscation). However, when it is is present, each method has a local variable table attribute that lists the type and name of local vari...
What's the difference between the WebConfigurationManager and the ConfigurationManager?
...e within a web application. As you know, there could be several web.config files in one applicaion - one in the root of the site and any number in subdirectories. You can pass path to the GetSection() method to get possible overridden config.
If we'd looke at WebConfigurationManager with Reflector ...
How do I resolve “Cannot find module” error using Node.js?
...my project code.
Update (8/2019):
Nowadays you can use package-lock.json file, which is automatically generated when npm modifies your node_modules directory. Therefore you can leave out checking in packages, because the package-lock.json tracks the exact versions of your node_modules, you're curr...
Forward function declarations in a Bash or a Shell script?
...
When my bash scripts grow too much, I use an include mechanism:
File allMyFunctions:
foo() {
}
bar() {
}
baz() {
}
File main:
#!/bin/bash
. allMyfunctions
foo
bar
baz
share
|
imp...
Is it possible to make the -init method private in Objective-C?
...
Apple has started using the following in their header files to disable the init constructor:
- (instancetype)init NS_UNAVAILABLE;
This correctly displays as a compiler error in Xcode. Specifically, this is set in several of their HealthKit header files (HKUnit is one of them)...
Changing variable names in Vim
... It takes me to the first use of the variable name in some function in the file :( If you're within some scope and want to select that scope, "va{" - "visual select around {" - is the way to go I think.
– Srikumar
Nov 29 '11 at 3:07
...
Using Sass Variables with CSS3 Media Queries
...er, you can do it with a mixin. That lets you have everything in a single file if you want.
@mixin styling($base-width) {
// your SCSS here, e.g.
#Contents {
width: $base-width;
}
}
@media screen and (max-width: 1170px) {
@include styling($b...
Take diff of two vertical opened windows in Vim
I've have two files opened. They are opened in vertical mode, next to next. Can I instantly diff these two files without leaving or closing Vim ?
...
Java “user.dir” property - what exactly does it mean?
... use user.dir dir as a base dir for my unit tests (that creates a lot of files). Is it correct that this property points to the current working directory (e.g. set by the 'cd' command)?
...