Convert String to DateTime?
How can I convert this string, 12:00 AM, into a DateTime? ...
string
Printing sub strings from command line arguments, in C.
Why doesn't this work. printf("%s\n", argv[1][3]); When this works? printf("%c\n", argv[1][3]); ...
Loading data from file in C
i am really struggling to load some numeric floating point data from a file into a C program...the file has floating point numbers with precision of 3 decimal points, each of which is in a single line...i wanted to load these values into an float array and then perform some calculations in it...however i tried loading it into an array of...
When should we use intern method of String ?
According to String#intern(), intern method is supposed to return the String from the String pool if the String is found in String pool, otherwise a new string object will be added in String pool and the reference of this String is returned. So i tried this: String s1 = "Rakesh"; String s2 = "Rakesh"; String s3 = "Rakesh".intern(); ...
How do I get \0 off my string from C++ when read in C#
I'm kind of stuck here. I'm developing a custom Pipleline component for Commerce Server 2009, but that has little to do with my problem. In the setup of the pipe, I give the user a windows form to enter some values for configuration. One of those values is a URL for a SharePoint site. Commerce Server uses C++ components behind all th...
MySQL: Using REPLACE as part of an IN statement
I am trying to use REPLACE to substitute spaces for commas. If I try SELECT REPLACE('1 2 3 4 5 6 7 86 9', ' ', ', '); then I get exactly what I need in a string. However, if I try this as part of an IN statement I only get returned the first match (ie, 1) Here is my entire query: SELECT aa.category_id, aa.yyyymm, ...
Java: Why can String equality be proven with ==?
I learned that it is from the devil to test String equality with == instead of String.equals(), because every String was a reference to its own object. But if i use something like System.out.println("Hello" == "Hello"); it prints true. Why? ...
What's the difference between 'eq' vs '==' in PHP?
Hi, First, I tried searching for different variations of the title I've put for this question, both in StackOverflow and google. I couldn't find a solution. I am fairly new to php. New enough to not know the difference between using eq and == for string comparison! I usually use == to compare strings in PHP. I am comfortable with it. ...
C#- How to handle string terminator in the conversion
I have a binary array. In the process of conversion it into string,due to some data my string gets terminated. and it ignores next data.Have a look on my code. Is there is any mistake?? str += (char)chunkData[index].ToString(); Later on i want to display it on textbox. My array contains following data as display in hex editor. xÚb``...
How to count instances of character in SQL Column
I have an sql column that is a string of 100 Y or Ns eg 'YYNYNYYNNNYYNY...' What is the easiest way to get the number of Ys in each row. ...
[C++] Array of char or std::string for a public library?
Hi, my question is simple: Should I use array of char eg: char *buf, buf2[MAX_STRING_LENGTH] etc or should I use std::string in a library that will be used by other programmers where they can use it on any SO and compiler of their choice? Considering performance and portability... from my point of view, std strings are eas...
.c_str() weirdness? Data changes without rhyme or reason?
I have this simple function: const wchar_t *StringManager::GetWCharTStar(int stringId) { std::wstring originalString = StringManager::GetString(stringId); const wchar_t *retStr = originalString.c_str(); return retStr; } At the second line of that function, I have the correct wchar_t*. However, when I go to return, the dat...
convert values in string to float array
i have a string in C which i got from some algorithm. it has numeric values in a format like this 0.100 0.840 0.030 0.460 0.760 -0.090 and so on in need to store each of these numeric values into a float array for numeric processing. i am new to C and found string handling in C to be complex. can anyone tell me how i might implement ...
extracting substrings in C
I have the string: "foo$bar@baz" I'm looking to write a C program which will extra all three sub-strings ("foo", "bar" and "baz") and put each into it's own string. P.S. Don't worry, this is not homework. ...
Constant-time hash for strings?
Another question on SO brought up the facilities in some languages to hash strings to give them a fast lookup in a table. Two examples of this are dictionary<> in .NET and the {} storage structure in Python. Other languages certainly support such a mechanism. C++ has its map, LISP has an equivalent, as do most other modern languages. It...
Javascript: strip out non-numeric characters from string
Consider a non-DOM scenario where you'd want to remove all non-numeric characters from a string. var myString = 'abc123.8<blah>'; //desired output is 1238 Question: How would you achieve this in plain Javascript? Please remember this is a non-DOM scenario, so jQuery and other solutions involving browser and keypress events aren't sui...
String.comparison performance (with trim)
I need to do alot of high-performance case-insensitive string comparisons and realized that my way of doing it .ToLower().Trim() was really stupid due do all the new strings being allocated So I digged around a little and this way seems preferable: String.Compare(txt1,txt2, StringComparison.OrdinalIgnoreCase) The only problem here...
String Compare "Logic"
Can anybody please tell me why the string comparisons below deliver these results? >>"1040"<="12000" True >> "1040"<="10000" False I've tried the string comparison in both C and Python, the result is obviously correct, I just can't figure out how the result is calculated... P.S.: I know that comparing strings of different lengt...
pass strings by reference in C
I'm having trouble figuring out how to pass strings back through the parameters of a function. I'm new to programming, so I imagine this this probably a beginner question. Any help you could give would be most appreciated. This code seg faults, and I'm not sure why, but I'm providing my code to show what I have so far. I have made this ...
Is there any scenario where the Rope data structure is more efficient than a string builder
Related to this question, based on a comment of user Eric Lippert. Is there any scenario where the Rope data structure is more efficient than a string builder? It is some people's opinion that rope data structures are almost never better in terms of speed than the native string or string builder operations in typical cases, so I...