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Programmatically set left drawable in a TextView
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Using Kotlin:
You can create an extension function or just use setCompoundDrawablesWithIntrinsicBounds directly.
fun TextView.leftDrawable(@DrawableRes id: Int = 0) {
this.setCompoundDrawablesWithIntrinsicBounds(id, 0, 0, 0)
}
If you need to resize the drawable...
Python equivalent for PHP's implode?
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Aggregate / summarize multiple variables per group (e.g. sum, mean)
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Using the data.table package, which is fast (useful for larger datasets)
https://github.com/Rdatatable/data.table/wiki
library(data.table)
df2 <- setDT(df1)[, lapply(.SD, sum), by=.(year, month), .SDcols=c("x1","x2")]
setDF(df2) # convert back to dataframe
Using the plyr package
require(pl...
Does “\d” in regex mean a digit?
...MAScript Matching Behavior" section in Regular Expression Options.
Info: https://docs.microsoft.com/en-us/dotnet/standard/base-types/character-classes-in-regular-expressions#decimal-digit-character-d
share
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What is the difference between self::$bar and static::$bar in PHP?
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Remove/hide a preference from the screen
...pp:isPreferenceVisible="false" />
...
The attribute is documented at https://developer.android.com/guide/topics/ui/settings/components-and-attributes
Adding PreferenceFragmentCompat is documented at https://developer.android.com/guide/topics/ui/settings/#inflate_the_hierarchy
Example:
publi...
How to convert a number to string and vice versa in C++
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How to decide between MonoTouch and Objective-C? [closed]
...ective, obviously, but I think this is pretty zealotry-free:
Is this for fun or business? If you wanted to get into consulting in this area, you could make your $399 back very quickly.
Do you want to learn the platform inside-out, or do you "just" want to write apps for it?
Do you like .Net enough...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...printf的源代码的这里
声明部分：
int pos =0 ,cnt_printed_chars =0 ,i ;
unsigned char *chptr ;
va_list ap ;
%s格式控制部分：
case 's':
chptr =va_arg (ap ,unsigned char *);
i =0 ;
while (chptr [i ])
...
原子vector的一种实现源码(atomic-vector) - C/C++ - 清泛网 - 专注C/C++及内核技术
...
Value get(size_t i) const;
template <typename F>
void foreach(F fun) const;
private:
static std::string typeName();
const size_t m_size;
std::atomic<AtomicVector*> m_next;
const Value m_default;
std::unique_ptr<std::atomic<Value>[]> m_vals;
TRACE_SET_MOD(atomicvect...