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PreparedStatement IN clause alternatives?

...ng multiple comma-delimited parameters. * * @param sql The SQL statement string with one IN clause. * @param params The number of parameters the SQL statement requires. * @return The SQL statement with (?) replaced with multiple parameter * placeholders. */ public static String any(String sql,...
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How to make an OpenGL rendering context with transparent background?

...-------*/ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <math.h> #include <GL/gl.h> #include <GL/glx.h> #include <GL/glxext.h> #include <X11/Xatom.h> #include <X11/extensions/Xrender.h> #include <X11/Xutil.h> #defin...
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Guaranteed lifetime of temporary in C++?

...Schaub: What is a "full-expression" in this case: printf("%s", strdup(std::string("$$$").c_str()) ); ?I mean if strdup(std::string("$$$").c_str()) is taken as the full expression, then the pointer that strdup sees is valid. If std::string("$$$").c_str() is a full expression, then the pointer that st...
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Converting an int to std::string

What is the shortest way, preferably inline-able, to convert an int to a string? Answers using stl and boost will be welcomed. ...
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Make a float only show two decimal places

...ored, it is a matter of how you are displaying it. When converting it to a string you must round to the desired precision, which in your case is two decimal places. E.g.: NSString* formattedNumber = [NSString stringWithFormat:@"%.02f", myFloat]; %.02f tells the formatter that you will be formatt...
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What column type/length should I use for storing a Bcrypt hashed password in a Database?

... Be aware - storing as binary(60) can cause unexpected behavior for string equality (among other things). In .NET this can be overcome by using String.Equals(fromDataBaseBinary60string, typicalishString, StringComparison.InvariantCulture) – JHubbard80 Fe...
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What are allowed characters in cookies?

...lue? According to the ancient Netscape cookie_spec the entire NAME=VALUE string is: a sequence of characters excluding semi-colon, comma and white space. So - should work, and it does seem to be OK in browsers I've got here; where are you having trouble with it? By implication of the above:...
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HTML form readonly SELECT tag/input

...eption (for example if we didn't handle this situation, and we expect one string and use 'Request.Form[FieldName]' command) – M.i.T Nov 17 '15 at 5:36 ...
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How to escape the % (percent) sign in C's printf?

...en compiled. printf is a run-time function, so it deals with bytes of your string, not with C source code, and it has its own escape sequences that are parts of the function. In short, printf is a "language inside a language", and printf("This is a's value: %s\n", a); gives the same result as printf...
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Why is an int in OCaml only 31 bits?

... like true, false, nil, the 127 ASCII characters, some commonly used short strings, the empty list, the empty object, the empty array and so on near the 0 address. For example, in the MRI, YARV and Rubinius Ruby interpreters, integers are encoded the way I described above, false is encoded as addre...