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Querying DynamoDB by date
...ps on the range key only. The hash key is required such that the service knows which partition to look in to find the data.
You can of course perform a scan operation to filter by the date value, however this would require a full table scan, so it is not ideal.
If you need to perform an indexed l...
jQuery Ajax POST example with PHP
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Yes, I understand that now. But I found many examples that always put a $(document).ready block around so that the example is self-contained. I wrote the comment for a future user who may, like me, stumble on this and end-up reading the comment thr...
How do you work with an array of jQuery Deferreds?
...lice.call(arguments));
});
return deferred;
}
}
Now you can simply pass in an array of deferreds/promises and get back an array of resolved/rejected objects in your callback, like so:
$.when.all(promises).then(function(schemas) {
console.log("DONE", this, schemas); /...
Combining multiple commits before pushing in Git [duplicate]
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Anyone know if you can have a multiple lined commit msg in your "pick" line, or will it confuse the parser?
– EhevuTov
Oct 9 '14 at 20:44
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What is the difference between location list and quickfix list in vim
...us to move through those lists without opening the associated windows and knowing the difference between those lists is key to using those commands efficiently.
Hands-on illustrated example:
Do :lvim foo % in foo.txt to create a location list for the window containing foo.txt.
Do :lne a few ti...
Debugging JavaScript in IE7
... simple project with one empty web page, "run" it (it starts the browser), now navigate to whatever page you want to debug, and start debugging.
Microsoft gives away full Visual Studio on different events, usually with license restrictions, but they allow tinkering at home. Check their schedule and...
How do function pointers in C work?
... which receives 2 ints and returns an int:
int (*functionPtr)(int,int);
Now we can safely point to our function:
functionPtr = &addInt;
Now that we have a pointer to the function, let's use it:
int sum = (*functionPtr)(2, 3); // sum == 5
Passing the pointer to another function is basica...
Creating runnable JAR with Gradle
Until now I created runnable JAR files via the Eclipse "Export..." functionallity but now I switched to IntelliJ IDEA and Gradle for build automation.
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Comment shortcut Android Studio
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For some reason it stopped working for me. Now this combo just folds the block of code. Any clue?
– danielrosero
Mar 13 '18 at 22:48
add a comm...
How do I determine the size of my array in C?
...;
size_t n = sizeof(a) / sizeof(a[0]);
Another advantage is that you can now easily parameterize
the array name in a macro and get:
#define NELEMS(x) (sizeof(x) / sizeof((x)[0]))
int a[17];
size_t n = NELEMS(a);
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