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How to 'bulk update' with Django?
...ousands of rows at once. Though it is suitable for smaller batches 10's to 100's. The size of the batch that is right for you depends on your CPU and query complexity. This tool is more like a wheel barrow than a dump truck.
...
Split comma-separated strings in a column into separate rows
...ws. To create larger data frames, these 20 rows are simply repeated 1, 10, 100, 1000, 10000, and 100000 times which give problem sizes of up to 2 million rows.
Benchmark results
The benchmark results show that for sufficiently large data frames all data.table methods are faster than any other m...
What's the UIScrollView contentInset property for?
...nsider the following example (scroller is a UIScrollView):
float offset = 1000;
[super viewDidLoad];
for (int i=0;i<500; i++) {
UILabel *label = [[[UILabel alloc] initWithFrame:CGRectMake(i * 100, 50, 95, 100)] autorelease];
[label setText:[NSString stringWithFormat:@"label %d",i]];
...
Why does this assert throw a format exception when comparing structures?
...
100
I've got it. And yes, it's a bug.
The problem is that there are two levels of string.Format g...
Implementing slicing in __getitem__
...turn lists instead of new range objects (as it does):
>>> range(1,100, 4)[::-1]
range(97, -3, -4)
We can't subclass range because of internal limitations, but we can delegate to it:
class Range:
"""like builtin range, but when sliced gives a list"""
__slots__ = "_range"
def __i...
Twitter image encoding challenge [closed]
If a picture's worth 1000 words, how much of a picture can you fit in 140 characters?
15 Answers
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Why should Java ThreadLocal variables be static
...;Integer> integerList = new ArrayList<>();
//creates a List of 100 integers
for (int i = 0; i < 100; i++) {
integerList.add(i);
}
//parallel stream to test concurrent thread execution
integerList.parallelStream().forEach(intValue -> {
//All concurrent thread will...
How to Customize a Progress Bar In Android
...omLevel = 0;
private int toLevel = 0;
public static final int MAX_LEVEL = 10000;
public static final int LEVEL_DIFF = 100;
public static final int DELAY = 30;
private Handler mUpHandler = new Handler();
private Runnable animateUpImage = new Runnable() {
@Override
public void run() {
...
Position an element relative to its container
I'm trying to create a horizontal 100% stacked bar graph using HTML and CSS. I'd like to create the bars using DIVs with background colors and percentage widths depending on the values I want to graph. I also want to have a grid lines to mark an arbitrary position along the graph.
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JSF backing bean structure (best practices)
...s like separating your methods. You dont want 1 big method which runs over 100's of lines, but rather split it up with new methods that handles their specific task.
Remember, most likely someone other than you will have to work on your JSF projects aswell.
As for the coupling, I dont see it as a ...