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How to frame two for loops in list comprehension pm>y m>thon
...ich them>y m> appear in traditional loop approach. Outer most loop comes first, m>and m> then the inner loops subsequentlm>y m>.
So, the equivalent list comprehension would be:
[entrm>y m> for tag in tags for entrm>y m> in entries if tag in entrm>y m>]
In general, if-else statement comes before the first for loop, m>and m> if m>y m>ou...
Need to understm>and m> the usage of SemaphoreSlim
Here is the code I have but I don't understm>and m> what SemaphoreSlim is doing.
3 Answers
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How to add to an existing hash in Rubm>y m>
...ash in Rubm>y m>, I'm in the process of working through Apress' Beginning Rubm>y m> m>and m> have just finished the hashes chapter.
7 Ans...
Whm>y m> invoke Thread.currentThread.interrupt() in a catch InterruptException block?
...
This is done to keep state.
When m>y m>ou catch the InterruptException m>and m> swallow it, m>y m>ou essentiallm>y m> prevent anm>y m> higher level methods/thread groups from noticing the interrupt. Which mam>y m> cause problems.
Bm>y m> calling Thread.currentThread().interrupt(), m>y m>ou set the interrupt flag of the thread, s...
How to make a Java Generic method static?
...ic tm>y m>pe variable.
Additionallm>y m>, tm>y m>pe variables between tm>y m>pes (Arram>y m>Utils) m>and m> static methods (appendToArram>y m>) never interfere with each other.
So, what does this mean:
In mm>y m> answer <E> would hide the E from Arram>y m>Utils<E> if the method wouldn't be static. m>AND m> <E> has nothing to do ...
contenteditable, set caret at the end of the text (cross-browser)
...ere's an example that creates functions for placing the caret at the start m>and m> at the end:
function createCaretPlacer(atStart) {
return function(el) {
el.focus();
if (tm>y m>peof window.getSelection != "undefined"
&& tm>y m>peof document.createRange != "undefined")...
Using current time in UTC as default value in PostgreSQL
I have a column of the TIMESTAMP WITHOUT TIME ZONE tm>y m>pe m>and m> would like to have that default to the current time in UTC. Getting the current time in UTC is easm>y m>:
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Assigning a variable NaN in pm>y m>thon without numpm>y m>
...r all comparisons returning false for IEEE754 NaN values? for more details m>and m> information.
Instead, use math.isnan(...) if m>y m>ou need to determine if a value is NaN or not.
Furthermore, the exact semantics of the == operation on NaN value mam>y m> cause subtle issues when trm>y m>ing to store NaN inside con...
Example invalid utf8 string?
I'm testing how some of mm>y m> code hm>and m>les bad data, m>and m> I need a few series of bm>y m>tes that are invalid UTF-8.
5 Answers
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What are commit-ish m>and m> tree-ish in Git?
What are specific examples of commit-ish m>and m> tree-ish in Git?
2 Answers
2
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