大约有 40,000 项符合查询结果（耗时：0.0387秒） [XML]
Get the Row(s) which have the max count in groups using groupby
...
transform method may have pool performance when the data set is large enough, get the max value first then merge the dataframes will be better.
– Woods Chen
Apr 10 '19 at 2:54
...
How to change fontFamily of TextView in Android
...
This is the way to set the font programmatically:
TextView tv = (TextView) findViewById(R.id.appname);
Typeface face = Typeface.createFromAsset(getAssets(),
"fonts/epimodem.ttf");
tv.setTypeface(face);
put the font file in your a...
How do I print the full value of a long string in gdb?
...
set print elements 0
From the GDB manual:
set print elements number-of-elements
Set a limit on how many elements of an array GDB will print. If GDB is printing a large array, it stops printing after it has printed the n...
Url decode UTF-8 in Python
...s library as well:
import requests
url = "http://www.mywebsite.org/Data%20Set.zip"
print(f"Before: {url}")
print(f"After: {requests.utils.unquote(url)}")
Output:
$ python3 test_url_unquote.py
Before: http://www.mywebsite.org/Data%20Set.zip
After: http://www.mywebsite.org/Data Set.zip
Might be...
Which, if any, C++ compilers do tail-recursion optimization?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Switch Git branch without files checkout
Is it possible in Git to switch to another branch without checking out all files?
11 Answers
...
When should I use C++ private inheritance?
Unlike protected inheritance, C++ private inheritance found its way into mainstream C++ development. However, I still haven't found a good use for it.
...
Example of multipart/form-data
...12345
Content-Disposition: form-data; name="image" filename="picture_of_sunset.jpg"
content of picture_of_sunset.jpg ...
--12345--
I found on this w3.org page that is possible to incapsulate multipart/mixed header in a multipart/form-data, simply choosing another boundary string inside multipart/...
Reset select2 value and show placeholder
How do I set the placeholder on value reset by select2. In my example If locations or grade select boxes are clicked and my select2 has a value than the value of select2 should reset and show the default placeholder. This script is resetting the value but won't show the placeholder
...
boost::flat_map and its performance compared to map and unordered_map
... recommend doing this:
u64 g_correctionFactor; // number of clocks to offset after each measurement to remove the overhead of the measurer itself.
u64 g_accuracy;
static u64 const errormeasure = ~((u64)0);
#ifdef _MSC_VER
#pragma intrinsic(__rdtsc)
inline u64 GetRDTSC()
{
int a[4];
__cpu...