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What breaking changes are introduced in C++11?
...mment on the fact, the "instantiation context" still consists of only "the set of declarations with external linkage declared prior to the point of instantiation of the template specialization in the same translation unit". So the change they made only affects the lookup in the definition context.
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Are std::vector elements guaranteed to be contiguous?
... guaranteed to be contiguous? In order word, can I use the pointer to the first element of a std::vector as a C-array?
7 A...
How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c
... Also note that git is fairly smart when it comes to this. You can set the abbreviation short, say to 4, and git will use 4 digits for as many hashes as it can, but switch to 5 or more when it knows that the abbreviation is not unique...
– twalberg
Aug ...
What are the differences between the threading and multiprocessing modules?
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What Giulio Franco says is true for multithreading vs. multiprocessing in general.
However, Python* has an added issue: There's a Global Interpreter Lock that prevents two threads in the same process from running Python code at the same...
Padding characters in printf
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Pure Bash. Use the length of the value of 'PROC_NAME' as offset for the fixed string 'line':
line='----------------------------------------'
PROC_NAME='abc'
printf "%s %s [UP]\n" $PROC_NAME "${line:${#PROC_NAME}}"
PROC_NAME='abcdef'
printf "%s %s [UP]\n" $PROC_NAME "${line:${#PROC_N...
How to convert an int to a hex string?
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You are looking for the chr function.
You seem to be mixing decimal representations of integers and hex representations of integers, so it's not entirely clear what you need. Based on the description you gave, I think one of these snippets ...
Format in kotlin string templates
...uble.format(fracDigits: Int): String {
val df = DecimalFormat()
df.setMaximumFractionDigits(fracDigits)
return df.format(this)
}
println(3.14159.format(2)) // 3.14
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Builder Pattern in Effective Java
... make the fields final and have getters to get those values. Don't provide setters to those values. In this way your class will be perfectly immutable.
public class NutritionalFacts {
private final int sodium;
private final int fat;
private final int carbo;
public int getSodium(){
...
get just the integer from wc in bash
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You can use the cut command to get just the first word of wc's output (which is the line or word count):
lines=`wc -l $f | cut -f1 -d' '`
words=`wc -w $f | cut -f1 -d' '`
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To find whether a column exists in data frame or not
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