Quoted from the CREATE TABLE Syntax page: A PRIMARY KEY can be a multiple-column index. However, you cannot create a multiple-column index using the PRIMARY KEY key attribute in a column specification. Doing so only marks that single column as primary. You must use a separate PRIMARY KEY(index_col_name, …) clause. Something like this can be … Read more
you can use the each function: var a = {}; a[‘alfa’] = 0; a[‘beta’] = 1; $.each(a, function(key, value) { alert(key) }); it has several nice shortcuts/tricks: check the gory details here
You don’t. Your array doesn’t have a key [1]. You could: Make a new array, which contains the keys: $newArray = array_keys($array); echo $newArray[0]; But the value “one” is at $newArray[0], not [1]. A shortcut would be: echo current(array_keys($array)); Get the first key of the array: reset($array); echo key($array); Get the key corresponding to the … Read more
int and const int are two distinct types. std::map<int, float> and std::map<const int, float> are, similarly, different types. The difference between std::map<const int, float> and std::map<int, float> is, to a degree, analogous to the difference between, say, std::map<int, float> and std::map<std::string, float>; you get a fresh map type for each. In the non-const case, the … Read more
Accessing Google places API involves a http/https request from the browser. The application key you created wouldn’t work for the Google places as it needs a browser key. You need to create a new browser key on the Google API console clicking the “Create new Browser Key” Also leave the Accept requests from these HTTP … Read more
Here’s how I would do it. I’d obtain a list of common English words with usage frequency and some grammatical information (like is it a noun or a verb?). I think you can look around the intertubes for some copy. Firefox is open-source and it has a spellchecker… so it must be obtainable somehow. Then … Read more
If I have a unicode character and all I want is to know the keystroke for it, then I use int keyCode = java.awt.event.KeyEvent.getExtendedKeyCodeForChar(charCode); I’ve never needed another, more complicated way to do this.
I suspect you need bool operator<(const Foo& foo1) const; Note the const after the arguments, this is to make “your” (the left-hand side in the comparison) object constant. The reason only a single operator is needed is that it is enough to implement the required ordering. To answer the abstract question “does a have to … Read more
You can send the modifier key combination Ctrl+C like this: [void][System.Reflection.Assembly]::LoadWithPartialName(‘System.Windows.Forms’) [System.Windows.Forms.SendKeys]::SendWait(“^{c}”) From article Converting the Windows Script Host SendKeys Method The modifier keys are: Key | Code ———– SHIFT + CTRL ^ ALT % Other keys you might want: Key | Code ———– BACKSPACE {BACKSPACE}, {BS}, or {BKSP} BREAK {BREAK} CAPS LOCK {CAPSLOCK} DEL … Read more
Something like In [1]: d = {‘banana’: 3, ‘orange’: 5, ‘apple’: 5} In [2]: sorted(d.items(), key=lambda x: (-x[1], x[0])) Out[2]: [(‘apple’, 5), (‘orange’, 5), (‘banana’, 3)]