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Is there a way to instantiate objects from a string holding their class name?
...ram termination)
// because we can't guarantee correct destruction order
if(!map) { map = new map_type; }
return map;
}
private:
static map_type * map;
};
template<typename T>
struct DerivedRegister : BaseFactory {
DerivedRegister(std::string const&...
JavaScript “new Array(n)” and “Array.prototype.map” weirdness
...p calls a provided callback function once for each element in an array, in order, and constructs a new array from the results. callback is invoked only for indexes of the array which have assigned values; it is not invoked for indexes which have been deleted or which have never been assigned values....
Handlebars/Mustache - Is there a built in way to loop through the properties of an object?
...hanks for Ben's solution, my use case to display only particular fields in order
with object
Code:
handlebars.registerHelper('eachToDisplayProperty', function(context, toDisplays, options) {
var ret = "";
var toDisplayKeyList = toDisplays.split(",");
for(var i = 0; i < toDispla...
append new row to old csv file python
...e to append a new row opening the file in 'a'mode.
Even in windows, in order to avoid the newline problem, you must declare it as newline=''.
Now you can open the file in 'a'mode (without the b).
import csv
with open(r'names.csv', 'a', newline='') as csvfile:
fieldnames = ['This','aN...
How to remove all debug logging calls before building the release version of an Android app?
... final boolean DEBUG_STARTING_WINDOW = false;
static final boolean DEBUG_REORDER = false;
static final boolean DEBUG_WALLPAPER = false;
static final boolean SHOW_TRANSACTIONS = false;
static final boolean HIDE_STACK_CRAWLS = true;
static final boolean MEASURE_LATENCY = false;
With corresponding co...
When to favor ng-if vs. ng-show/ng-hide?
...t to be able to check validity on inputs that aren't currently visible, in order to determine whether the whole form is valid.
You're using some really elaborate stateful logic with conditional event handlers, as mentioned above. That said, if you find yourself manually attaching and detaching handl...
Do try/catch blocks hurt performance when exceptions are not thrown?
...
Can you try them in reverse order as well to be sure that JIT compilation hasn't had an effect on the former?
– JoshJordan
Aug 20 '09 at 20:04
...
How do you roll back (reset) a Git repository to a particular commit? [duplicate]
...
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Static function variables in Swift
...ticularly liked this solution. This is a perfect example of using a higher-order function to achieve the same result as a static variable inside the scope of a function. Static function vars are not natively supported in Swift for good reasons. It's the natural evolution of programming. Trying to co...
INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
...act so that if you were to try on your own and didn't realize there was an order of operations, then you would get this error. Naturally after adding the primary key data, your foreign key data in the child table must conform to the primary key field in the parent table, otherwise, you will still g...