The Viterbi algorithm is much faster. It computes the same scores as the recursive search in Dmitry’s answer above, but in O(n) time. (Dmitry’s search takes exponential time; Viterbi does it by dynamic programming.) import re from collections import Counter def viterbi_segment(text): probs, lasts = [1.0], [0] for i in range(1, len(text) + 1): prob_k, … Read more
Here’s how to do it with the # and % operators in Bash. $ x=”/foo/fizzbuzz.bar” $ y=${x%.bar} $ echo ${y##*/} fizzbuzz ${x%.bar} could also be ${x%.*} to remove everything after a dot or ${x%%.*} to remove everything after the first dot. Example: $ x=”/foo/fizzbuzz.bar.quux” $ y=${x%.*} $ echo $y /foo/fizzbuzz.bar $ y=${x%%.*} $ echo $y … Read more
As others have mentioned, you cannot override the sealed S4 method “+”. However, you do not need to define a new class in order to define an addition function for strings; this is not ideal since it forces you to convert the class of strings and thus leading to more ugly code. Instead, one can … Read more
The String class is immutable and doesn’t have a setter for the value. The getter is basically the Object#toString() method. You need to get/set the value directly on the List instead. You can do that by the list index which is available by <ui:repeat varStatus>. <ui:repeat value=”#{mrBean.stringList}” varStatus=”loop”> <h:inputText value=”#{mrBean.stringList[loop.index]}” /> </ui:repeat> You don’t need … Read more
As SQLite doesn’t have a date type you will need to do string comparison to achieve this. For that to work you need to reverse the order – eg from dd/MM/yyyy to yyyyMMdd, using something like where substr(column,7)||substr(column,4,2)||substr(column,1,2) between ‘20101101’ and ‘20101130’
This snippet on the Advanced Bash Scripting Guide says: # The == comparison operator behaves differently within a double-brackets # test than within single brackets. [[ $a == z* ]] # True if $a starts with a “z” (wildcard matching). [[ $a == “z*” ]] # True if $a is equal to z* (literal matching). … Read more
There is apex_util.string_to_table – see my answer to this question. Also, prior to the existence of the above function, I once posted a solution here on my blog. Update In later versions of APEX, apex_util.string_to_table is deprecated, and a similar function apex_string.split is preferred.
Assuming you mean you want the non-numbers stripped out, you should be able to use something like: Function onlyDigits(s As String) As String ‘ Variables needed (remember to use “option explicit”). ‘ Dim retval As String ‘ This is the return string. ‘ Dim i As Integer ‘ Counter for character position. ‘ ‘ Initialise … Read more
The best way of working with files and directories in VBA for Office 2000/2003 is using the scripting library. Create a filesystem object and do all operations using that. Early binding: Add a reference to Microsoft Scripting Runtime (Tools > References in the IDE). Dim fso as new FileSystemObject Dim fileName As String fileName = … Read more
Don’t roll your own, use these handy (and extensible) wrappers provided by Microsoft. For example: #include <msclr\marshal_cppstd.h> System::String^ managed = “test”; std::string unmanaged = msclr::interop::marshal_as<std::string>(managed);