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Remove an item from a dictionary when its key is unknown
What is the best way to remove an item from a dictionary by value, i.e. when the item's key is unknown? Here's a simple approach:
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Find size of Git repository
... git 1.8.3 introduced a more efficient way to get a rough size: git count-objects -vH (see answer by @VonC)
For different ideas of "complete size" you could use:
git bundle create tmp.bundle --all
du -sh tmp.bundle
Close (but not exact:)
git gc
du -sh .git/
With the latter, you would also be...
How to convert a String to its equivalent LINQ Expression Tree?
This is a simplified version of the original problem.
7 Answers
7
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javascript i++ vs ++i [duplicate]
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The difference between i++ and ++i is the value of the expression.
The value i++ is the value of i before the increment. The value of ++i is the value of i after the increment.
Example:
var i = 42;
alert(i++); // shows 42
alert(i); // sh...
How do I concatenate strings in Swift?
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You can concatenate strings a number of ways:
let a = "Hello"
let b = "World"
let first = a + ", " + b
let second = "\(a), \(b)"
You could also do:
var c = "Hello"
c += ", World"
I'm sure there are more ways too.
Bit of description
let creates a con...
How and/or why is merging in Git better than in SVN?
I've heard in a few places that one of the main reasons why distributed version control systems shine, is much better merging than in traditional tools like SVN.
Is this actually due to inherent differences in how the two systems work, or do specific DVCS implementations like Git/Mercurial just ha...
How to split a string into an array of characters in Python?
I've tried to look around the web for answers to splitting a string into an array of characters but I can't seem to find a simple method
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Differences between dependencyManagement and dependencies in Maven
What is the difference between dependencyManagement and dependencies ?
I have seen the docs at Apache Maven web site.
It seems that a dependency defined under the dependencyManagement can be used in its child modules without specifying the version.
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Mod of negative number is melting my brain
...at it will loop round. Doing i %
arrayLength works fine for positive numbers but for negative numbers it all goes wrong.
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LaTeX Optional Arguments
... Optional arg: #1.}
This defines \example to be a command with two arguments,
referred to as #1 and #2 in the {<definition>}--nothing new so far.
But by adding a second optional argument to this \newcommand
(the [YYY]) the first argument (#1) of the newly defin...