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Simple regular expression for a decimal with a precision of 2
...ire that the whole string is a number of this form, wrap the expression in start and end tags such as (in Perl's form):
^\d+(\.\d{1,2})?$
To match numbers without a leading digit before the decimal (.12) and whole numbers having a trailing period (12.) while excluding input of a single period (.)...
How to find a Java Memory Leak
... capabilities (diffs are easier to analyze in graphical form) will work.
Start the application and wait until it get to "stable" state, when all the initialization is complete and the application is idle.
Run the operation suspected of producing a memory leak several times to allow any cache, DB-r...
Solving a “communications link failure” with JDBC and MySQL [duplicate]
... using MAMP PRO, the easy fix, which I really wish I had realized before I started searching the internet for days trying to figure this out. Its really this simple...
You just have to click "Allow Network Access to MySQL" from the MAMP MySQL tab.
Really, thats it.
Oh, and you MIGHT have to stil...
How to choose the right bean scope?
...CDI scope and in JSF 2.2 substituted with @FlowScoped (no need to manually start/stop it).
– BalusC
Jan 30 '16 at 20:41
1
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How do you do relative time in Rails?
...
Something like this would work.
def relative_time(start_time)
diff_seconds = Time.now - start_time
case diff_seconds
when 0 .. 59
puts "#{diff_seconds} seconds ago"
when 60 .. (3600-1)
puts "#{diff_seconds/60} minutes ago"
when 3600 .. (3600*24-1)...
How do cache lines work?
... transferring the 8B-aligned chunk containing the desired byte first, i.e. starting the burst there (and wrapping around if it wasn't the first 8B of the burst transfer size). Modern CPUs with multi-level caches probably don't do that anymore, though, because it would mean relaying the first block(...
How do I clear/delete the current line in terminal?
...d: Ctrl+W
To clear your entire command prompt: Ctrl + L
Toggle between the start of line and current cursor position: Ctrl + XX
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EOFError: end of file reached issue with Net::HTTP
...r me. My new code is:
@http = Net::HTTP.new('domain.com')
@http = @http.start
url = 'http://domain.com/requested_url?blah=blah&etc=1'
req = Net::HTTP::Get.new(URI.encode(url))
req.basic_auth USERNAME, API_KEY
res = @http.request(req)
Note that I use @http.start as I want to maintain th...
Configuration System Failed to Initialize
... config file (web.config if web, or app.config if windows) in your project starts as:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="applicationSettings"
type="System.Configuration.ApplicationSettingsGroup, System, ...
How to replace plain URLs with links?
...placedText, replacePattern1, replacePattern2, replacePattern3;
//URLs starting with http://, https://, or ftp://
replacePattern1 = /(\b(https?|ftp):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gim;
replacedText = inputText.replace(replacePattern1, '<a href="$1" target...