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Find value in an array
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array.select{} will go through all elements in the array looking those which match the condition. array.find instead will return the first element that match the condition. So preferable use array.find{ |e| e == 3 } then array.select{ |e| e == 3 }.first
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In Javascript, how to conditionally add a member to an object?
I would like to create an object with a member added conditionally.
The simple approach is:
22 Answers
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How do I force my .NET application to run as administrator?
Once my program is installed on a client machine, how do I force my program to run as an administrator on Windows 7?
12 An...
Change One Cell's Data in mysql
...nly one cell of a mysql table.
I have problem with UPDATE because it makes all the parameters in a column change but I want only one changed. How?
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Android: open activity without save into the stack
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It seems, if you call finish() on your activity right after you have opened another, the one that is finished is removed from the stack.
for example:
Intent intent = new Intent(this, NextActivity.class);
startActivity(intent);
finish();
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Auto detect mobile browser (via user-agent?) [closed]
...r agents and store unknowns as they are detected for revision and then manually figure out what they are. This last thing might be overkill in some cases.
If you want to do it at Apache level, you can create a script which periodically generates a set of rewrite rules checking the user agent (or ju...
How to check if element has any children in Javascript?
... about child elements (as opposed to text nodes, attribute nodes, etc.) on all modern browsers (and IE8 — in fact, even IE6) you can do this: (thank you Florian!)
if (element.children.length > 0) { // Or just `if (element.children.length)`
// It has at least one element as a child
}
Tha...
“unrecognized import path” with go get
I'm trying to install a web.go , but running go get github.com/hoisie/web returns
9 Answers
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git update-index --assume-unchanged returns “fatal unable to mark file”
...nd downloaded the latest version of git, but this did not help.
What I finally realized is that this command is case sensitive! This includes the full path and file name. After updating path to the directory so that the full path was specified with proper casing, the command executed properly.
N...
How to export and import a .sql file from command line with options? [duplicate]
...some issues/tips:
Error: ......not exist when using LOCK TABLES
# --lock-all-tables，-x , this parameter is to keep data consistency because some transaction may still be working like schedule.
# also you need check and confirm: grant all privileges on *.* to root@"%" identified by "Passwd";
ER...