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What is the rationale for fread/fwrite taking size and count as arguments?
...n value on a successful read (of zero bytes), feof() and ferror() won't be set, and errno will be something nonsensical like ENOENT, or worse, something misleading (and possibly critically breaking) like EAGAIN -- very confusing, especially since basically no documentation screams this gotcha at you...
What's the Point of Multiple Redis Databases?
...ou simply create a key index. Whenever adding a key, add the key name to a set. The keys command is not terribly useful once you scale up since it will take significant time to return.
Let the access pattern determine how to structure your data rather than store it the way you think works and then...
Auto line-wrapping in SVG text
I would like to display a <text> in SVG what would auto-line-wrap to the container <rect> the same way as HTML text fills <div> elements. Is there a way to do it? I don't want to position lines sparately by using <tspan> s.
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Removing duplicate rows in vi?
...n this many times until all dups are gone since this only removes them one set of dups at a time.
– horta
Jan 22 '18 at 23:56
2
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Unlimited Bash History [closed]
...d was, or how some command broke something weeks ago. How do I change this setting?
4 Answers
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Using arrays or std::vectors in C++, what's the performance gap?
In our C++ course they suggest not to use C++ arrays on new projects anymore. As far as I know Stroustroup himself suggests not to use arrays. But are there significant performance differences?
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Correct way to detach from a container without stopping it
In Docker 1.1.2 (latest), what's the correct way to detach from a container without stopping it?
10 Answers
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how to customize `show processlist` in mysql?
...ep -v '^\+\-\-'
| grep -v '^| Id'
| grep -v '^[0-9][0-9]* rows in set '
| grep -v '^ '
| sort -n -k12
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Arduino101（Genuino 101）&App Inventor – RGB LED控制 - 创客硬件开...
...uot;, BLERead | BLEWrite );
int incom = 0;
int r, g, b ;
void setup() {
Serial.begin(9600);
// set Light pin to output mode
// set advertised local name and service UUID:
blePeripheral.setLocalName("ControlLED");
bleP...
Constructing pandas DataFrame from values in variables gives “ValueError: If using all scalar values
...in hand:
df = pd.DataFrame.from_records([{ 'A':a,'B':b }])
You can also set index, if you want, by:
df = pd.DataFrame.from_records([{ 'A':a,'B':b }], index='A')
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