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How to test if a string is basically an integer in quotes using Ruby
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You can use regular expressions. Here is the function with @janm's suggestions.
class String
def is_i?
!!(self =~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end...
How to determine if binary tree is balanced?
It's been a while from those school years. Got a job as IT specialist at a hospital. Trying to move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced.
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Fastest Way of Inserting in Entity Framework
I'm looking for the fastest way of inserting into Entity Framework.
30 Answers
30
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Calling Python in Java?
I am wondering if it is possible to call python functions from java code using jython, or is it only for calling java code from python?
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How to define hash tables in Bash?
...n/env bash or #!/bin/bash so you don't end up using sh. Make sure you're either executing your script directly, or execute script with bash script. (Not actually executing a Bash script with Bash does happen, and will be really confusing!)
You declare an associative array by doing:
declare -A ani...
Can you do this HTML layout without using tables?
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There is nothing wrong with using the tools that are available to you to do the job quickly and correctly.
In this case a table worked perfectly.
I personally would have used a table for this.
I think nested tables should be avoided, things can g...
Structure padding and packing
...daries - say, int members would have offsets, which are mod(4) == 0 on 32-bit platform. Padding is on by default. It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
char c;
c...
node.js remove file
How do I delete a file with node.js?
16 Answers
16
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Bytecode features not available in the Java language
...rently (Java 6) things you can do in Java bytecode that you can't do from within the Java language?
9 Answers
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How can I override the OnBeforeUnload dialog and replace it with my own?
... the default dialogue for onbeforeunload, so your best bet may be to work with it.
window.onbeforeunload = function() {
return 'You have unsaved changes!';
}
Here's a reference to this from Microsoft:
When a string is assigned to the returnValue property of window.event, a dialog box appe...