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Reading a file line by line in Go
...the most simple way to do this is with a bufio.Scanner. Here is a simple example that reads lines from a file:
package main
import (
"bufio"
"fmt"
"log"
"os"
)
func main() {
file, err := os.Open("/path/to/file.txt")
if err != nil {
log.Fatal(err)
}
defer fi...
How to find list of possible words from a letter matrix [Boggle Solver]
...r ny in range(max(0, y-1), min(y+2, nrows)):
yield (nx, ny)
Sample usage:
# Print a maximal-length word and its path:
print max(solve(), key=lambda (word, path): len(word))
Edit: Filter out words less than 3 letters long.
Edit 2: I was curious why Kent Fredric's Perl solution was f...
How does Dijkstra's Algorithm and A-Star compare?
... your graph. Because of that Dijkstra could be more useful than A*. Good example is when you have several candidate target nodes, but you don't know, which one is closest (in A* case you would have to run it multiple times: once for each candidate node).
...
How to hide first section header in UITableView (grouped style)
... hide the first section header in UITableView (grouped style).
Swift 3.0 & Xcode 8.0 Solution
The TableView's delegate should implement the heightForHeaderInSection method
Within the heightForHeaderInSection method, return the least positive number. (not zero!)
func tableView(_ tableView: UI...
When would anyone use a union? Is it a remnant from the C-only days?
...es them (sometimes in passing), but they tend to give very few practical examples of why or where to use them. When would unions be useful in a modern (or even legacy) case? My only two guesses would be programming microprocessors when you have very limited space to work with, or when you're develop...
Resolve build errors due to circular dependency amongst classes
...e as much space as it knows about upfront - pointers and references, for example, will always be 32 or 64 bits (depending on the architecture) and so if you replaced (either one) by a pointer or reference, things would be great. Let's say we replace in A:
// file: A.h
class A {
// both these are ...
Error in strings.xml file in Android
...for you.
</string>
Ref:
http://www.mrexcel.com/forum/showthread.php?t=195353
https://code.google.com/archive/p/replicaisland/issues/48
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How do I add multiple arguments to my custom template filter in a django template?
I looked into django's docs and book but only found example using a single argument... is it even possible?
9 Answers
...
How do I assign an alias to a function name in C++?
...riable or a namespace. But how do I assign a new name to a function? For example, I want to use the name holler for printf . #define is obvious... any other way?
...
How do I get the currently displayed fragment?
...ragmentManager().findFragmentByTag("MY_FRAGMENT");
if (myFragment != null && myFragment.isVisible()) {
// add your code here
}
See also http://developer.android.com/reference/android/app/Fragment.html
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