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How to check if a string contains only digits in Java [duplicate]
...r
String regex = "\\d+";
As per Java regular expressions, the + means "one or more times" and \d means "a digit".
Note: the "double backslash" is an escape sequence to get a single backslash - therefore, \\d in a java String gives you the actual result: \d
References:
Java Regular Expression...
Read a file in Node.js
...ther use cases (and loading files to a cache at start-up is definitely not one of them), the OP's post is definitely not a case where you want to use readFileSync--he's in the middle of processing a web request. This answer was totally inappropriate to the question at hand.
– S...
What's a good (free) visual merge tool for Git? (on windows) [closed]
...ut in the end went for Beyond Compare, with pay, and have been very happy. One minus of Meld is that the buttons don't give mouseover descriptions. Another - Beyond Compare provides buttons to move from one difference to the next. Another - Beyond Compare shows the file paths in the window title bar...
How do I choose between Tesseract and OpenCV? [closed]
...r that performs basic OCR, but it is not a very good OCR engine (I've made one in Python before from scratch. It's really inaccurate for input that deviates from your training data).
If you want to get a basic understanding of how hard OCR is, try OpenCV. Tesseract is for real OCR.
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How can I get the DateTime for the start of the week?
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This would be off by one day for me sometimes. It worked for me once I stripped the time component from dt. I used int diff = dt.Date.DayOfWeek - startOfWeek;
– Vincent Saelzler
May 26 '17 at 17:43
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What Computer Science concepts should I know? [closed]
...by Steve Yegge (formerly of Amazon, now at Google):
The Five Essential Phone Screen Questions
It goes into some detail about the the five most important concepts that developers should be required to know:
Basic programming (including recursion, file I/O, formatted output, loops etc)
Object or...
What's the difference between a file descriptor and file pointer?
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One is buffered (FILE *) and the other is not. In practice, you want to use FILE * almost always when you are reading from a 'real' file (ie. on the drive), unless you know what you are doing or unless your file is actually a...
How to change column datatype in SQL database without losing data
...have SQL Server database and I just realized that I can change the type of one of the columns from int to bool .
11 Ans...
How do you use version control with Access development?
...End If
Function exportModulesTxt(sADPFilename, sExportpath)
Dim myComponent
Dim sModuleType
Dim sTempname
Dim sOutstring
dim myType, myName, myPath, sStubADPFilename
myType = fso.GetExtensionName(sADPFilename)
myName = fso.GetBaseName(sADPFilename)
myPath = fso.GetP...
API vs. Webservice [closed]
...rite code that interfaces with other code. A Web Service is a type of API, one that almost always operates over HTTP (though some, like SOAP, can use alternate transports, like SMTP). The official W3C definition mentions that Web Services don't necessarily use HTTP, but this is almost always the cas...