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Convert a String In C++ To Upper Case
...s to iterate over its contents. std::basic_string has both a const and a mutable iterator (returned by cbegin() and begin() respectively, see std::basic_string::begin), so for(:) uses the one appropriate (cbegin() if str is declared const, with auto =:= const char, begin() otherwise, with auto =:= c...
ADO.NET DataRow - check for column existence
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You can simply check like this:
return row.Table.Columns.Contains(columnName);
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Setting the default value of a DateTime Property to DateTime.Now inside the System.ComponentModel De
...lue). The issue for me was when I wanted to add a record directly into the table(using SQL) I had to provide the date(or leave it NULL). This is a much better solution. Thanks.
– Storm Muller
Sep 12 '18 at 18:32
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How do you display code snippets in MS Word preserving format and syntax highlighting?
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Brilliant! I've been fiddling with styles, tables and other workarounds for years. This fixes everything in one go. Note that you also get the bonus of adding a caption to your code. I added a new label type "Listing" for brownie points :-)
– Neb...
Expand a div to fill the remaining width
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This would be a good example of something that's trivial to do with tables and hard (if not impossible, at least in a cross-browser sense) to do with CSS.
If both the columns were fixed width, this would be easy.
If one of the columns was fixed width, this would be slightly harder but entir...
What's quicker and better to determine if an array key exists in PHP?
...y search function, it only checks the presence of a variable in the symbol table and will not iterate over the array. array_key_exists on the other hand will iterate/search for the keys in the first dimension of the specified array.
– Rain
Apr 22 at 3:16
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How to prevent ifelse() from turning Date objects into numeric objects
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You may use data.table::fifelse (data.table >= 1.12.3) or dplyr::if_else.
data.table::fifelse
Unlike ifelse, fifelse preserves the type and class of the inputs.
library(data.table)
dates <- fifelse(dates == '2011-01-01', dates - 1, d...
How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
...hese macros only helps the first time code is executed or when the history table is overwritten by a different branch with the same index into the branching table. In a tight loop, and assuming a branch goes one way most of the time, the branch predictor will likely begin guessing the correct branc...
POSTing a @OneToMany sub-resource association in Spring Data REST
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This worked for me. Just make sure the author.post is writable (for example by having a setter or @JsonValue annotation)
– scheffield
May 28 '15 at 3:14
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How do I check to see if a value is an integer in MySQL?
... matching the string to a regular expression. Simply do
select field from table where field REGEXP '^-?[0-9]+$';
this is reasonably fast. If your field is numeric, just test for
ceil(field) = field
instead.
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