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Regex using javascript to return just numbers
If I have a string like "something12" or "something102", how would I use a regex in javascript to return just the number parts?
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How to make an Android Spinner with initial text “Select One”?
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Here's a general solution that overrides the Spinner view. It overrides setAdapter() to set the initial position to -1, and proxies the supplied SpinnerAdapter to display the prompt string for position less than 0.
This has been tested on Android 1.5 through 4.2, but buyer beware! Because this s...
TypeScript type signatures for functions with variable argument counts
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What is the Java ?: operator called and what does it do?
...nother function that may or may not return a value and allow the next code set to run?
– johnny
May 1 '09 at 16:00
8
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Design by contract using assertions or exceptions? [closed]
When programming by contract a function or method first checks whether its preconditions are fulfilled, before starting to work on its responsibilities, right? The two most prominent ways to do these checks are by assert and by exception .
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Why can't I make a vector of references?
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By their very nature, references can only be set at the time they are created; i.e., the following two lines have very different effects:
int & A = B; // makes A an alias for B
A = C; // assigns value of C to B.
Futher, this is illegal:
int & D; ...
What is a monad?
... for each invocation (rather than single values), but merges the resulting set of arrays into a single array. So the end result is the same, the array [2,3,4].
(The function argument provided to a method like map or flatMap is often called a "callback" in JavaScript. I will call it the "operation" s...
How to export a Vagrant virtual machine to transfer it
I have a vagrant box up and running (configured with a LAMP stack). I need to transfer it to another PC. How can I export it?
I guess that I can get a file (or files) that can be copied to another PC, so there I can run some command to import the vagrant box.
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PhpStorm text size
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Enable CTRL+Mouse Wheel: Settings -> Editor -> Change font size (Zoom) with Ctrl+Mouse Wheel (check).
Specify exact font size: Settings -> Editor -> Colors & Fonts -> Font.
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dd: How to calculate optimal blocksize? [closed]
...sh:
#!/bin/bash
# Since we're dealing with dd, abort if any errors occur
set -e
TEST_FILE=${1:-dd_obs_testfile}
TEST_FILE_EXISTS=0
if [ -e "$TEST_FILE" ]; then TEST_FILE_EXISTS=1; fi
TEST_FILE_SIZE=134217728
if [ $EUID -ne 0 ]; then
echo "NOTE: Kernel cache will not be cleared between tests wi...