大约有 40,000 项符合查询结果(耗时:0.0679秒) [XML]

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mysql :: insert into table, data from another table?

... INSERT INTO action_2_members (campaign_id, mobile, vote, vote_date) SELECT campaign_id, from_number, received_msg, date_received FROM `received_txts` WHERE `campaign_id` = '8' ...
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A fast method to round a double to a 32-bit int explained

... this: and it can be seen as two 32-bit integers; now, the int taken in all the versions of your code (supposing it's a 32-bit int) is the one on the right in the figure, so what you are doing in the end is just taking the lowest 32 bits of mantissa. Now, to the magic number; as you correctly ...
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How to explicitly discard an out argument?

...ublic void PrintXCoordinate(Point p) { p.GetCoordinates(out int x, out _); // I only care about x WriteLine($"{x}"); } Source: https://blogs.msdn.microsoft.com/dotnet/2017/03/09/new-features-in-c-7-0/ share ...
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How do I perform a Perl substitution on a string while keeping the original?

... I was wondering if something like my $new = $_ for $old =~ s/foo/bar; would work? – Benoit Apr 30 '14 at 17:11 ...
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What's the most elegant way to cap a number to a segment? [closed]

...a-library" answer but just in case you're using Lodash you can use .clamp: _.clamp(yourInput, lowerBound, upperBound); So that: _.clamp(22, -10, 10); // => 10 Here is its implementation, taken from Lodash source: /** * The base implementation of `_.clamp` which doesn't coerce arguments. * * ...
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Determine Whether Two Date Ranges Overlap

... Proof: Let ConditionA Mean that DateRange A Completely After DateRange B _ |---- DateRange A ------| |---Date Range B -----| _ (True if StartA > EndB) Let ConditionB Mean that DateRange A is Completely Before DateRange B |---- DateRange A ...
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Toggle Checkboxes on/off

... You can write: $(document).ready(function() { $("#select-all-teammembers").click(function() { var checkBoxes = $("input[name=recipients\\[\\]]"); checkBoxes.prop("checked", !checkBoxes.prop("checked")); }); }); Before jQuery 1.6, when we only ...
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Is there any particular difference between intval and casting to int - `(int) X`?

... behavior is a little surprising given the fact that the function theoretically can do base conversion. It definitely tripped me up before, but perhaps I just need to RTFM a bit more carefully :) – t-dub Feb 10 '12 at 17:07 ...
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Render a variable as HTML in EJS

...de ('newline slurping') with -%> ending tag Whitespace-trim mode (slurp all whitespace) for control flow with <%_ _%> Control flow with <% %> So, in your case it is going to be <%- variable %> where variable is something like var variable = "text here <br> and some more t...
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What's the idiomatic syntax for prepending to a short python list?

... @MattM. If you insert at the front of a list, python has to move all the other items one space forwards, lists can't "make space at the front". collections.deque (double ended queue) has support for "making space at the front" and is much faster in this case. – fejfo ...